YT YouTube2Text

YouTube2Text → Transcripts → Comment créer un second cerveau IA avec Obsidian ? (Claude, ChatGPT etc.)

Comment créer un second cerveau IA avec Obsidian ? (Claude, ChatGPT etc.) — Transcript

by Didier Laket | IA & Automatisation · 6,723 words · 951 segments · language en · Watch on YouTube

Open in transcriber Summarize with AI Download SRT/VTT

Full transcript

0:00You take notes, save articles, keep
0:02ideas for later, and the day you really
0:04need them, you don't know where to look
0:06. What if your AI could find that
0:08information and help you use it? That's
0:11what I do with Obsidian, my AI second
0:13brain. And in this video, I'll show you
0:16how it works, how I use it daily, and
0:18how you could create your own. Before
0:20we dive into the heart of the matter,
0:22let's simply define what a second brain
0:24is. A second brain is simply a place
0:26where you gather all your notes, your
0:27ideas, your projects, your readings,
0:29and your desires. In other words, it is
0:31a system that extends your memory. We
0:33can't remember everything. The human
0:35brain cannot retain everything. So you
0:37might as well write down these ideas
0:39before you forget them. And it's super
0:42practical because you can rely on
0:43everything you've written over the
0:45months and years to help you think,
0:47connect ideas together, and create and
0:49move forward on your projects. So, you
0:52can create a second brain with many
0:54different applications. I decided to do
0:56it with Obsidian for the reasons I'll
0:58tell you in this video, but you could
1:00very well do it with Notion, Apple
1:02Notes, Google Keep, or Evernote; it
1:04doesn't matter which app, as long as
1:06you have a place to store your ideas
1:08and projects. And when we talk about an
1:10AI second brain, it's simply a second
1:12brain where you've let the AI read your
1:14notes and sometimes even write some of
1:16them. And the advantage of doing that
1:18is that you can let it search for you,
1:20tell you precisely where each piece of
1:22information is, or even create notes
1:23for you as I mentioned, but we'll see
1:25that in this video. I invite you to
1:27head over to Obsidian. To be able to
1:29download the software. By the way, it
1:31is available on macOS, Windows, Android
1:33, and iPhone. And once downloaded,
1:35you'll have an interface like this one.
1:37Mine is in English because I use my
1:39computer in English, but you can choose
1:41French as your language. And you will
1:44be invited to either create a vault or
1:46open an existing one. In Obsidian, a
1:50vault is simply a folder, and this
1:51folder is on your computer just like
1:54any other folder. So we're going to
1:56create a vault, and we'll call it video
1:58tutorial. As you can see, I have
1:59already created two vaults. Here in
2:01location, we can choose where to store
2:03it on our computer. So for me, I'll
2:05leave it in my documents and I can go
2:07ahead and create it. There we go. And
2:09by default, you'll have an initial note
2:11that gets created. And if I go to my
2:13file explorer, you'll see it, it's
2:15really just a folder on my computer.
2:17Right here, I have video tutorial, our
2:20new vault, and inside we have our first
2:22note called welcome.md. Actually, all
2:26the files and folders you create within
2:28your vault could be opened with any
2:30other software. For example, this file,
2:32this first note, I can open it with
2:34Cursor and I have access to exactly the
2:36same thing. This is your new vault.
2:38It's exactly what is written in
2:40Obsidian. And that's really what made
2:42Obsidian popular, this "files over app"
2:45philosophy, meaning your files are more
2:47important than the software you use. In
2:50fact, Obsidian simply provides the
2:52interface that allows me to edit these
2:54files, but tomorrow, I could easily
2:56decide to use another program to edit
2:58them. And that's also why this method
3:01and Obsidian are widely used for
3:03building a second brain, because
3:05ultimately, AI just needs to read files
3:07and folders. No need to connect to an
3:10external service, or configure an MCP
3:12or a special connection. AI only needs
3:15to read our files. And Obsidian also
3:17attracts quite a few people who want to
3:20keep their notes private since, by
3:21default, your notes stay on your
3:23computer; they aren't sent to an
3:25external service. They belong to you,
3:27and you truly keep control. Even though
3:29, as we'll see a bit later, you can
3:31also sync them to the cloud. So, text
3:33files within Obsidian are in a format
3:35called Markdown, and we can see it here
3:38, it says MD at the end of the filename
3:40. It's simply a convention for
3:42formatting text. Instead of formatting
3:46text like in other text editors with
3:48buttons, as I can do here currently in
3:50Google Docs, you'll format your text by
3:52typing symbols. For example, to make a
3:55level 1 heading, you can use a hashtag,
3:57for a level 2 heading, two hashtags, or
3:59to write text in italics. Use asterisks
4:01, and we'll do that right now. Here I
4:03can make a level 2 heading. And here I
4:06can make some text in italics. Write
4:08text in bold with two asterisks, and so
4:11on. And this Markdown format, this
4:13convention, is used by many programs on
4:16the internet, so once again, you can
4:18open these files with any other text
4:20editor. Within a note, you can
4:22reference another note or create one by
4:24using two brackets like this. And in
4:27the welcome note, I can reference home.
4:29Home is not highlighted simply because
4:31the note doesn't exist yet. But if I
4:32click on it, the note will be created
4:34and welcome will be linked to home. You
4:36see it now, the note is in bold. Here,
4:38I can see that "create a link" is not
4:40yet in bold because the note hasn't
4:41been created. And now, if I click on
4:43the side panel on the left, I will be
4:45able to see all my notes. And you can
4:47clearly see that I have welcome, which
4:49is linked to home and linked to a note
4:51not yet created called "create a link."
4:54And that's how you'll be able to build
4:56a graph in Obsidian by linking your
4:58notes to each other when it's relevant.
5:00All right, now let's take a quick tour
5:02of the software; on the side panel,
5:04which you can hide of course, you can
5:06create a new note like this. There you
5:08go, home 2. This note, of course, you
5:10will be able to see in the graph right
5:12away. Since I haven't made a link, it's
5:14not connected to anything. I can also
5:16create subfolders. A "housing" folder,
5:19for example. There, and I can move home
5:212 inside it. Folders are not
5:23represented on the graph. And with
5:25notes and folders, you'll be able to
5:27build your organization within your
5:28second brain. And once again, if I open
5:31my file explorer, it's just as if I had
5:33created a simple folder and file on my
5:34computer. There are two other types of
5:36files in Obsidian. The first is called
5:38Canvas. It's simply a workspace where
5:41you can create little cards like this.
5:45A card 1, and you can decide to link
5:47your cards to another card, card 2, or
5:49why not to a note like this. Add a note
5:54, and here I can select a note that
5:55exists in the vault, and there you go.
5:58Home; obviously, if I write content in
6:00home, bedroom, living room, I go back
6:02to my Canvas, and I can visualize it
6:04like this. So that can be quite handy
6:07if you're a very visual worker,
6:08allowing you to connect your notes, add
6:11cards, and link them to best represent
6:13your ideas. Now, obviously, I can
6:15rename this little Canvas and call it "
6:18archi," for example. The other file
6:20type that exists by default in Obsidian
6:22is the database file type. Databases
6:24are like Excel sheets, or rather
6:26databases, that will group all your
6:28files, or at least all the files you
6:30decide to group into this base, because
6:33you can associate specific filters with
6:35each database. For example, I could
6:38easily create a filter in this view to
6:41say that I only want the files located
6:43in the "habitat" folder. For instance.
6:48And so here now, I only have my two
6:50files, whereas previously I had all the
6:53files in our vault. And within a
6:55database, you have several types of
6:57views. Here I have the table view, but
6:59I also have a gallery view like this.
7:01And with each view, obviously, you have
7:03associated filters. Since I changed the
7:06view, the filter I had previously
7:07created is no longer applied. So I can
7:10see everything. But I will also be able
7:12to apply filters to all the views. So
7:14that's the table view and the gallery
7:15view. You also have a list view like
7:18this, and you also have a view that I
7:20use extensively, especially for my
7:22content creation: the Kanban view, and
7:24this view relies on what are called
7:26properties within your Obsidian files.
7:28Well, that's perfect, let's create some
7:30. So let's go back to "house." I'll
7:33click on the three little dots right
7:34here and I'll be able to click on "add
7:36properties to this file." There we go.
7:38Now, in this video, I don't have time
7:40to explain all the Markdown syntax and
7:42all its possibilities, but you can find
7:44a note explaining all of that in my AI
7:47library. It's the first link in the
7:48description. So I click on "add file
7:50properties," and properties are pieces
7:52of information you can put at the top
7:54of each note to better describe your
7:56notes and better organize your vault,
7:58your Obsidian chest. By default, you
8:00will always have the "tags" property
8:02available. And here, you can add tags.
8:05For example, we could easily have a "
8:07location" tag, a "favorite" tag like
8:09this. And I can decide to create
8:11properties. For instance, I can create
8:13a "date" property and uh put either
8:15text like this. So here, this is a
8:16property I've created where I can
8:18specify that this property is of a
8:20different type. There are several types
8:22available in Obsidian. Time, date, list
8:24, number, text, and depending on what
8:26you choose, the value will obviously
8:28have to change. Here, I could no longer
8:31enter text since I set a number-type
8:33property, but I could enter digits like
8:35this. And if I set a date-type property
8:38, well, it will need to be updated, and
8:40here I could enter a date. There are
8:42very few property types, but overall
8:44these types will be more than enough.
8:46And in the properties, you can even put
8:48links to your files like this. For
8:50example, here I could link to "archi,"
8:52and once again, these properties are
8:55just text. If I switch to source mode,
8:57I can see exactly what is written in
8:59the text file. And as you can see, to
9:00create a property, you need to use
9:02three dashes at the top and bottom. And
9:04once you have created a few properties,
9:06if I go back to the database, I will be
9:07able to visualize them. Obviously, I'll
9:09need to display them by clicking on "
9:11properties" and selecting the display
9:13of the properties I created. For
9:14example, link; what else did I create?
9:16There was a tag, I think. There it is.
9:19So I will be able to visualize them.
9:20I'll switch to a view without filters
9:22so you can see them all. There we go.
9:24So here we have "archi," we have the,
9:26we have "favorites base." It looks a
9:28bit like the databases in Notion, if
9:30you're familiar with that. And with
9:32these properties, you'll be able to
9:33fully utilize these database features.
9:36For example, here, I'll switch to
9:38Kanban view and choose a property as a
9:40column. Let's use "tag," for example.
9:42There. And so here, I have all my notes
9:45, and if I drag and drop, I'll be able
9:47to automatically associate a note with
9:49a tag or a property. Since we have the
9:51"food" column here, it's normal for "
9:53welcome" to have the "food" tag. I
9:55highly recommend you explore the
9:57databases. It's really super powerful
9:59and very practical for managing all
10:01your files in Obsidian. In summary, the
10:03Canvas is truly a visual workspace, and
10:06the databases are tables you can use to
10:08manage your notes, your projects, their
10:10status, and to sort or filter them in
10:13these lists. Let's continue our
10:15overview. If I return to a note, as you
10:17saw earlier, if you click the three
10:19dots, you have plenty of different
10:21options to rename your note, export it
10:24as a PDF, merge it, move it, or search
10:26within that note. It's really very
10:28practical. You also have several
10:30reading modes in Obsidian. You have a
10:32reading mode just to read your note,
10:33and one to edit it where you can make
10:35changes. Earlier, I couldn't edit it in
10:38the previous reading mode, and I also
10:40have the option, as you saw, to view
10:42the source and see exactly how my note
10:44is written without all the Obsidian
10:46formatting. If I click the panel on the
10:51right, I'll have other options that let
10:53me see my note's links to other files
10:55in my vault, see tags, all properties
10:57in my vault, or view the note's
10:59structure. Now, like this, you can't
11:03see it very well. But if I go to a "
11:05Welcome" note and decide to make a
11:07level 1 heading, a level 3 heading, you
11:09see it on the side: it displays, I have
11:12all my headings and I can navigate like
11:14this within my note. And later on,
11:16you'll also have plenty of other search
11:18features within your outline. For
11:20example, if we look at the left sidebar
11:22now, you have your file explorer.
11:24You'll be able to perform searches.
11:26You'll also be able to view all the
11:28notes you've favorited. Now, that's
11:30simple. I click on my note then I click
11:32on mark or bookmark in English. I save
11:34it and here I can find "Welcome." So
11:36that's quite handy when you have a lot
11:38of notes and want to find your
11:40favorites first. I didn't specify, but
11:43in the search interface, you can search
11:45by tags, by properties, by name, or by
11:48the content of your note. It's really
11:51quite a powerful search. And below that
11:53, you'll have little shortcuts to
11:55create notes, for example, to create
11:57folders directly, to change the sort
11:59order of your files and notes in your
12:01file explorer, or to reveal your
12:03current location. So there, if I go to
12:05"house 2" and close it, I press here,
12:07hop, we can clearly see that "house 2"
12:09is displayed automatically. So that's
12:12quite handy if you're in a note that's
12:13deep within a subfolder, to be able to
12:15reveal its location like this. And you
12:17can also choose to expand all folders
12:19to see them and visualize all the notes
12:21within, or collapse everything like
12:23this. By the way, as you can see,
12:25Obsidian works with a tab system, much
12:28like your web browser. And if I drag
12:30and drop, for example "archi," I can
12:32place it in another tab or even put it
12:34side-by-side like this to have two
12:36notes next to each other. So that's
12:38pretty convenient, right? If you need
12:40to work on several notes at once, it's
12:42totally possible, and you can just
12:44place them side-by-side and have, I
12:46believe, up to four notes next to each
12:48other. If we head further to the left,
12:50you'll find buttons we've already
12:51touched on a bit. First off, the file
12:53switcher or command palette, which will
12:56allow you to select a file quite
12:57quickly. Graph view, also, which we've
13:00already seen, shows you all your
13:02Obsidian notes. And you can customize
13:05this graph a little bit with filters,
13:07for example. You can display certain
13:09properties or specific tags from your
13:11files. For instance, here, I'll display
13:14the location tags, favorite tags, and
13:16the food tag. So, it's not just files
13:19that are represented. You can, for
13:21example, remove notes that aren't
13:23linked to anything—the orphaned notes
13:25. You can group notes, modify the
13:28arrows a bit, the displayed text, the
13:30node size—it's really very versatile.
13:33And a small change. There's also a
13:36pretty cool button that lets you start
13:38a timelapse to watch the links appear
13:40over time and see your notes being
13:41created in the graph. Still on the side
13:44panel, you have a quick button to
13:46create a Canvas. As you can see, I
13:48clicked on it, and an untitled Canvas
13:50just appeared. Another shortcut that
13:52can be quite useful is the ability to
13:53create a daily note. So, it's simply a
13:55note that will have today's date by
13:57default, and you can fill it with, I
13:59don't know, all your thoughts for the
14:01day, for example. It's a shortcut you
14:03can customize a little bit, which makes
14:05creating these types of notes easier.
14:08Another feature that's quite
14:10interesting is inserting a template.
14:12You'll be able to create notes with
14:14certain information already included by
14:16default. For example, well, I won't be
14:19able to click on insert template
14:21because I haven't configured one, but I
14:23could create a "home" template where
14:25all the notes I create will be called "
14:27home," tagged as "place," have this
14:29date, and so on. And so it can be very
14:32practical to have note templates that
14:34you can create in a single click. All
14:36of this is to be configured; all of
14:37this can be found in the settings. You
14:39also have the option to open the
14:40command palette. And so here, you will
14:42find lots and lots of Obsidian commands
14:44. Actually, this palette and many of
14:46Obsidian's features can be opened using
14:48shortcuts, which are customizable and
14:50modifiable in the settings, once again.
14:53And finally, a small shortcut to create
14:55a base; Obsidian provides a huge amount
14:57of features by default, and you can go
14:59even further by going into the settings
15:01. So, there are a huge number of
15:03settings; we won't see them all, I'll
15:05point out the most important ones in my
15:07opinion. Firstly, you will be able to
15:10change a huge number of things
15:11regarding the look of the software,
15:13notably the software theme. If I click
15:16here on manage, I have access to all
15:18the community themes created by the
15:20Obsidian community to change the look
15:22of the software. And each time, you
15:23will have the name of the theme, the
15:25author's name, the number of downloads,
15:27and it's really very varied. For
15:29example, if I decide to take the
15:31Cupertino theme, presto, I could
15:32install it in a single click, and
15:34before your very eyes, you can see
15:36Obsidian has changed a lot. You see,
15:38now there are many more colors. It
15:40looks, it really looks like an iPhone
15:42interface. Even within your note,
15:44everything is new, and sometimes themes
15:46really add quite a few features. So
15:48you'll have to explore. I'll let you do
15:50it. Just be careful not to spend too
15:52much time because you can really get
15:54lost. And you can also get lost with
15:56the other feature I'd like to show you,
15:58which is simply the add-ons or plugins.
16:01I'm going to enable the use of
16:03community plugin add-ons; it's the same
16:05name. I will be able to click on browse
16:08, and here I will have access to over
16:108,000 modules. The list grows day by
16:13day, which will allow me to add a huge
16:15number of features to Obsidian. And
16:17it's also thanks to this that this
16:19software has become very famous and
16:21widely used. Meaning that even if
16:23you're missing a feature within
16:25Obsidian, you'll be able to add that
16:27feature by creating plugins or by
16:28downloading someone else's plugin.
16:31Moreover, a large number of these
16:33plugins are also available for your
16:35mobile app. You'll just have to check
16:37on a case-by-case basis. Alright,
16:38enough talk, I’m going to show you an
16:40example. For instance, I can install
16:42Notebook Navigator. It’s a fairly
16:44well-known plugin that lets me have a
16:46different view for my file explorer. A
16:49view that looks a little more like
16:51Notion, if you’re familiar with that
16:53note-taking tool. I installed another
16:55plugin, for example, Tool Bar, I think
16:57that’s what it’s called. Edit Tool
16:59Bar. Remember, we were talking about
17:01Markdown earlier and the fact that, by
17:03default, Obsidian doesn’t have a
17:05little bar that lets you easily format
17:07your text. Well, with this plugin, for
17:09example, I can have that little toolbar
17:12. There, now I’ll show you. I’ve
17:13activated the plugin; you always have
17:15to activate them. And by the way, in
17:17the add-ons section, you can disable
17:19them with a single click or, for
17:20instance, go into their respective
17:22settings. Each plugin has its own
17:24settings so you can tweak it a bit. So,
17:27if I go to a note, you can already see
17:29that my file explorer has really
17:31changed. It looks like something
17:34similar to Notion, where I have a
17:36folder and if I click, I go to another
17:38window. There, I can also add images if
17:40I wish. And you’ll see, the image
17:42should normally be displayed directly.
17:44Hop, copy-paste this image and you see
17:47the image is displayed right here at
17:49this level. So that’s the Notebook
17:51Navigator plugin, which gives you other
17:53features for your navigation. See, this
17:55kind of display wouldn't have been
17:57possible if I were using the basic file
17:59explorer. So, I can go back to that, by
18:01the way. Hop, I still have access. You
18:03see, here I don't see the image I just
18:05added. Likewise, I have the little
18:07toolbar, and if I write, hop, I can
18:09color this text simply with this little
18:11toolbar. That would have been much more
18:14difficult, or even impossible. If I
18:16hadn't used this plugin, I'd be able to
18:19strikethrough text or underline it if I
18:21want. All of this is thanks to plugins
18:23that you can add yourself. Once again,
18:24just like with themes, really, you can
18:27do an enormous amount of things. You'll
18:31have plugins to sync your notes to the
18:34cloud, to turn Obsidian into a to-do
18:36list or task list, to add an Obsidian
18:38calendar, or to add an AI chat window,
18:40for example, using Copilot or Smart
18:43Connections. Even though my favorite AI
18:48plugin is called Yolo, I invite you to
18:50watch the video on the channel about
18:52that plugin. It's a plugin that lets
18:54you have an AI chat on the side. There,
18:56I'm going to enable it. And if I go to
18:58a note—I haven't connected it to an
19:00AI model yet, but I should normally be
19:02able to access it. Hop, here I have
19:05Yolo Chat. And here, you see, I can
19:07chat with an AI, highlight text, start
19:10writing, or ask the AI what it thinks
19:12of my note. I can ask it to edit it. In
19:16short, the possibilities with community
19:18plugins are endless. And the only
19:21advice I give you is not to waste too
19:23much time over-customizing or
19:25over-modifying your Obsidian vault,
19:27because it can really be never-ending.
19:31By the way, updating plugins is
19:33different from updating Obsidian, since
19:35they are independent extensions, and
19:37you can access their updates here in
19:39Community Plugins. There's a video on
19:42the channel where I talk about my
19:44favorite plugins. There are default
19:46plugins created by Obsidian that we've
19:49actually already seen in this video,
19:51like the database, Canvas, etc. And all
19:53these plugins, all these features, you
19:56can decide to enable or disable them on
19:58the fly, or even change their settings.
20:01So that's also very practical. There
20:03are plenty of features that aren't
20:05enabled by default. For example, you
20:08could decide to add audio recordings,
20:11make slides, create random notes,
20:13enable or disable the word count for
20:15each note, and so on. Everything is
20:19customizable. Alright, to finish up,
20:21I'll talk to you about templates. It's
20:23what I was telling you about earlier.
20:24As I mentioned, you can create default
20:27notes in Obsidian using templates. And
20:29here, I'm going to select a folder
20:30where all my templates will be stored.
20:32So, I'm going to choose the "habitat"
20:34folder; that will work just fine. If I
20:37create a new note and decide to insert
20:39a template, I'll have the template
20:40located in the habitat folder by
20:42default. Just by clicking, the note has
20:45now changed. Well, its title hasn't
20:47changed, but I do have the food tag.
20:49And that is exactly how my home 2 note
20:51is, as you can see with a food tag. And
20:53if I had had some text, well, the note
20:56would have also had that text. So this
20:58is a very powerful way of working to go
21:00quite fast. And if you use AI in your
21:02workflow, you can very well ask your AI
21:04to refer to or use these templates.
21:06Obviously, you wouldn't call the folder
21:08where you have all your templates "
21:10habitat folder." You would call it "
21:12template" or "models," it will be much
21:14clearer. But there you go, it's a
21:16feature that is available. Daily notes,
21:18likewise, you will also be able to set
21:20the location of the template for your
21:22daily notes using this option. So, for
21:24example, home, and state the location
21:26where you want it to be, for example,
21:28in folder 2. And now, if I click on
21:31daily note, you see I have this
21:32template that has been filled with all
21:34this information. The note was indeed
21:37created in folder 2. And if we create
21:39our second brain now, everything I am
21:41going to explain from now on, I develop
21:43much more in-depth in the course I am
21:45currently creating. So don't hesitate
21:47to click on the first link in the
21:49description. You will get my AI library
21:51with my skills, my prompts, my
21:53templates, my automations, my AI agents
21:55. There are over 100 free resources,
21:57and you will also be notified when the
21:59course is released. Additionally, in
22:01the course, you will get a prompt that
22:03will allow you to install your AI
22:04second brain in a few clicks by
22:06chatting with your AI. And I will also
22:08show you how I use this system to
22:10create content every day by going much
22:12faster thanks to using what we call
22:14skills. So, here is our little second
22:16brain that we have created up until now
22:18. To transform it into an AI second
22:20brain, you just need to connect an AI
22:22that can browse your notes, edit them,
22:24and so on. To do this, you have two
22:26solutions. Either you use a module, a
22:28complementary plugin; there are many in
22:30the list as we have already discussed.
22:33Copilot, Smart Connection, or Yolo, the
22:35plugin I decided to use. And then,
22:38thanks to these plugins, you will have
22:40a small interface right next to it,
22:41we've already talked about it, where
22:43you will be able to chat with your AI
22:45directly on your files. And the other
22:47way is simply to open your second brain
22:50, so your second brain folder, directly
22:52into an AI program. On all the AI
22:55software on the market, you'll be able
22:57to create projects or simply give the
22:59AI access to certain folders on your
23:01computer. For example, here I am on the
23:04Claude project, and for each Claude
23:06project, I can associate a folder
23:08located on my computer. Now, of course,
23:11you will need to download the AI
23:12applications. This is very important.
23:15You won't be able to do this, or at
23:17least not in the same way, if you use
23:19an AI in your browser, an online AI;
23:21download the applications. I have the
23:23Claude app, I have the ChatGPT app, I
23:25have the OpenCode app, and there you'll
23:27be able to choose, hop, to allow Claude
23:30to read our second brain folder. I'll
23:32be able to simply ask it, hop, give me
23:35the number of files. And now Claude
23:37will be able to read and modify
23:38everything located in our second brain.
23:40Great. And it's the same thing if you
23:43use Claude Code; you'll also have a
23:44little menu right at the bottom to add
23:46a folder. Same thing if you use ChatGPT
23:49; you'll be able to create projects
23:51there and associate folders from your
23:53computer in the same way. Here, I can
23:55associate video tutorials, there you go
23:58, with all my files and continue to
24:00chat with my AI, knowing that it has my
24:02project as context and that it can
24:04perform searches, modify, delete, and
24:07so on. Note that if you don't want the
24:10AI to have access to all the files and
24:12folders in your second brain, you can
24:13very well decide to share only one part
24:16of your second brain. For example, I
24:20could decide to share only the home
24:22folder so that my AI can only read and
24:24modify the files present in the home
24:26folder. So that's also a way to protect
24:29yourself if you don't want to put AI
24:31everywhere. Another piece of advice
24:33I'll give you is to create a file at
24:35the root of your second brain that
24:36you'll call "agent" like this, with an
24:38's', exactly like this. And in fact,
24:40it's a file that will be read by
24:42default by ChatGPT, and by Claude as
24:44well now. Before, it only read "
24:46claudes.md". But now it also reads "
24:49agents.md" and is read by all the AIs
24:51generally on the market. And it's the
24:53first file that will be loaded by the
24:55AI when reading your folder. And so
24:58here, you'll be able to simply indicate
25:00its personality. tune my assistant to
25:04create cooking recipes, for example.
25:07And here, you'll be able to tell it
25:09what to do, what it can't do, and so on
25:11. How should you structure your second
25:13brain? For example, in the habitat
25:16folder, you will find my house models,
25:19for instance. And with all these
25:21instructions, as soon as you send a
25:23message, this file will be loaded and
25:25the AI will have the right context. You
25:27can totally use AI to help you create
25:30this file, modify it, and improve it so
25:32that it has the most relevant
25:33information for reading your second
25:35brain. Just to show you, I gave it a
25:38bunch of instructions to explain what I
25:40do for a living, where to find files,
25:42and so on, and how it should handle
25:44this or that. We were just talking
25:46about organization, and that's another
25:47thing I advise you to do: think about
25:49the organization of your second brain.
25:51Now, as you saw in the example, my
25:53second brain is really not organized at
25:56all. There are methods for organizing a
25:58second brain. One of the well-known
26:01systems is the PARA organization, where
26:03you have to create four different
26:05folders: projects, areas, resources
26:08like this, and archives. And in each
26:10folder, you will be able to store
26:12relevant information. So, resources are
26:14all the assets you have to create your
26:16files, to manage your life, whether
26:18it's reading material, documents, etc.
26:21Archives are all the documents that are
26:23no longer relevant. Projects are all
26:25the projects that are still ongoing.
26:27You could, by the way, keep projects
26:28that are no longer ongoing in this
26:30folder, but that wouldn't be very
26:32relevant. Generally, we move them to
26:34archives afterward. And areas are all
26:36the "projects," in quotes, that you
26:38manage throughout your life. All the
26:40aspects of your life that don't change.
26:42For example, if you are a doctor, it
26:44could be interesting to have a file or
26:46an area that covers your profession.
26:48It's not a project that has a start
26:49date or an end date. So it would be
26:51relevant to put it in Areas. I advise
26:53you to look into this way of organizing
26:55your knowledge. It's quite interesting.
26:58There are plenty of other different
27:00ways, like ACE for example, as well as
27:02methods for creating your notes. I'm
27:04thinking of the Zettelkasten method, or
27:06the Map of Content method where you
27:08create a file with all the links to
27:10your various other files to have a sort
27:12of table of contents. I talk about
27:14these aspects in a bit more detail in
27:15the training. In any case, I advise you
27:17to think a little bit about how you
27:19organize your second brain so you don't
27:21get lost. And another tip, don't create
27:23too many subfolders. That was my
27:25mistake at the beginning when I used
27:27Obsidian. I created subfolders when two
27:30levels of subfolders should normally be
27:33quite enough. And then later, you'll be
27:37able to manage your knowledge by
27:38linking your other files or simply by
27:40using tags or properties, which will be
27:43very useful when you use the databases.
27:47For example, to manage my content, just
27:49to show you, I use these features a lot
27:52. So here is the list of all the videos
27:54I've planned, the videos I've already
27:56made, and so on. Same thing for the
27:58shorts. And all of this is thanks to
28:00the properties within my various files.
28:02And so this way, I don't need to create
28:05a thousand subfolders. For example, all
28:07my content is in a single folder. It
28:09doesn't matter if it's a carousel, a
28:11video for LinkedIn, YouTube, etc. A few
28:14years ago, I would have gone crazy
28:16seeing this setup, but I'm telling you,
28:18it manages very well with these other
28:20Obsidian features and your files will
28:22be easy to find. And one of the tricks
28:25I can also use when I chat with my AI
28:27agent, for example here, I have this
28:29file, is simply to click on the three
28:32little dots and go find what's called
28:34copy path from vault folder. There you
28:36go. And simply give it the path where
28:38the file I'm talking about is located.
28:42Like this, I can continue the
28:43discussion and it knows exactly which
28:45file I'm referring to, and I can even
28:48specify the line I want to modify.
28:50Modify line 35, delete the photo, etc.,
28:52and it will be able to do it perfectly.
28:55So, one thing that is quite important
28:56when you organize your second brain is
28:58to create an organization that suits
29:00you. Here, for example, you see, I
29:02presented the PARA method to you, but I
29:04don't follow PARA exactly, even if
29:06sometimes there are folders that look
29:07similar, but I preferred to adapt it to
29:09my way of working to simply be
29:11productive. So don't hesitate, if you
29:13find second brain organizations, to
29:15adapt them to your own way of working
29:17too. In any case, in the course, you
29:19will get a prompt that will allow you
29:21to create your AI second brain in a few
29:23minutes. It's the AI that will create
29:25it for you by answering a few questions
29:27, so that the organization of your
29:29second brain, the creation of the
29:31agent.md file, etc., is truly adapted
29:33to what you want to do in life: whether
29:35it's content creation, just managing
29:37your life, managing your knowledge, and
29:40so on. In any case, as soon as you have
29:42a question, don't hesitate to ask your
29:43AI; it will be able to answer your
29:45questions and help you. So, in this
29:47video, I won't be presenting the
29:48organization of my vault in detail. I'm
29:50simply going to tell you about one of
29:52the folders that I find most important,
29:53which is the prompt folder. So here, I
29:55store all my prompts and all my skills.
29:57Regardless of the application. So, if
29:59you don't know, a skill is simply a
30:01method. So, for example, here is my
30:04skill to get the AI to write the way I
30:06like. And so, here, I'm going to
30:07describe the method for doing it. For
30:09example, get straight to the point. I
30:11believe I also have an instruction to
30:13forbid it from using certain very "AI"
30:15phrasings, like bullet points, things
30:17like that, explain technical terms,
30:19etc. So that is a skill. And in fact,
30:21I've gathered all my skills in the same
30:23place in my second brain. This means
30:26that when I chat with Claude, ChatGPT,
30:28or another AI, everyone will refer to
30:31the skills found in my second brain.
30:35And for instance, when I am not at my
30:37computer, I have a personal AI agent
30:39called Hermes. So it's a small AI that
30:42is installed on a server in the cloud,
30:45on a small computer in the cloud, and I
30:47can continue to chat with Hermes, my AI
30:49, via Telegram. And even Hermes has the
30:53instruction to refer to the prompts
30:55present in my second brain. The result
31:00is that even if I use several
31:01applications due to the nature of my
31:03job, my methods and my knowledge are
31:05not lost in different applications.
31:09Because if you create a skill, a method
31:11, for example on Claude, well, it will
31:14be saved in Claude's files. And when
31:16you want to use another AI, for example
31:19Perplexity or ChatGPT, well, ChatGPT or
31:22Perplexity won't have access to the
31:24skills you created on Claude. And using
31:28the second brain like this allows you
31:30to centralize everything in one place,
31:32and ultimately, in Claude or in ChatGPT
31:34, I have skills that refer to the same
31:37skills I have in my second brain. For
31:39example, YouTube plan to create a
31:41YouTube video outline. And this skill
31:44within ChatGPT is simply a link to the
31:46skill called YouTube plan, which is
31:48right here. And here is the skill with
31:52really all the useful information.
31:54Claude or ChatGPT will directly go and
31:56read the skill on Obsidian. The same
31:59goes for Hermes. That is a very good
32:01use of an AI second brain. Truly
32:03gathering all your knowledge, and all
32:05the AIs you use, even though I
32:06recommend on the channel quite
32:08regularly to use only one AI. For me,
32:10it's really my job that makes me use
32:12several of them. But all the AIs you
32:14use will benefit from this knowledge,
32:16and you'll be able to capitalize on it
32:18and do cooler and cooler projects. So,
32:20last piece of advice, final pointer:
32:22you will see many people on the
32:24internet talking about creating super
32:26graphs on Obsidian, and so on. Well, to
32:29be honest, I don't use the Obsidian
32:31graph much. In reality, I use it very,
32:34very rarely. I mean, it's very pretty,
32:36but does it ultimately help you work?
32:38That is really the question you need to
32:39ask yourself. So there you go, don't
32:41fall into this shiny object syndrome by
32:43trying to build the most beautiful
32:45graph. I am not a big fan of giving AI,
32:47for example, documents and letting it
32:49autonomously create all your notes
32:51without having read them, without
32:53having modified them, without having
32:55made them your own, because in the end,
32:57these notes generally won't be used,
32:59and they'll just be ghostly notes in
33:02your AI second brain. Even if AI can do
33:06a huge amount of things for us, I
33:07consider it an assistant and that I am
33:10still the master of the ship, even if I
33:12sometimes let the AI create notes. If I
33:15want these notes to be truly useful to
33:17me, I must make them my own at some
33:19point. So, one last piece of advice:
33:21don't hesitate to ask for AI's help,
33:23but don't let AI do everything for you,
33:25otherwise it will become its second
33:27brain more than your second brain. So,
33:29I could have continued this video to
33:31talk to you, for example, about
33:33Readwise, which is my tool for
33:34annotating the books I read, the
33:36articles I read, the YouTube videos I
33:37watch, and which helps me precisely to
33:39create this graph. But we will stop
33:41this video here, otherwise it will be
33:43far too long. I hope you enjoyed this
33:45video, that you learned a lot, and that
33:47it will allow you to create your second
33:48brain. Don't hesitate to tell me in the
33:50comments which aspect of the second
33:52brain you'd like me to develop, what
33:54video you'd like to see, and as for us,
33:56I'll see you next time. This was Didier
33:58. Ciao!

About this transcript

This page contains the full transcript of Comment créer un second cerveau IA avec Obsidian ? (Claude, ChatGPT etc.) by Didier Laket | IA & Automatisation, generated from the public captions YouTube serves with the video. The transcript has 6,723 words across 951 segments, with the original timestamps preserved so you can click any line to jump to that moment in the embedded player.

What you can do with it

Use the transcript to take notes, quote the speaker, build a study guide, generate a summary with ChatGPT or Claude via the YouTube Summary tool, or export it as a timed subtitle file with YouTube to SRT. You can also re-open it in the transcriber to choose a caption track available on the video.

Free YouTube transcript tool

YouTube2Text is a free YouTube transcript generator — no signup, no daily limit. Paste any YouTube link and get the full transcript instantly, with timestamps, click-to-jump, caption language selection, AI prompts for ChatGPT, Claude, and Gemini, and exports to TXT, SRT, VTT, or Markdown.