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“Building a Second Brain” by Tiago Forte

“Building a Second Brain” is a comprehensive guide to creating a digital system for managing information that can help you be more productive, creative, and focused. It offers practical advice and tools that can be applied to a variety of contexts, from personal note-taking to professional project management.

"Building a Second Brain" by Tiago FortePin


Please note: This is an unofficial summary created to help you understand and apply the principles outlined in the book. For full disclaimer details, click here.

Most of us have experienced the frustration of losing a brilliant idea or forgetting important information due to information overload. According to the New York Times, the average person processes the equivalent of 34 gigabytes of information every day, which is simply too much for one brain to handle. Fortunately, technology offers tools to create a second digital brain to file, recall, and recombine information efficiently, freeing up our actual brain for deep thinking and creativity. The book “Building a Second Brain” by Tiago Forte explains how to build a second brain and never forget important information again.

Building a Second Brain

The book, “Building a Second Brain” by Tiago Forte, is a comprehensive guide to creating a digital system for capturing, organizing, and retrieving information that can help individuals be more productive, creative, and focused. Forte argues that traditional note-taking methods, such as paper notebooks and sticky notes, are no longer sufficient in today’s digital age, where we are inundated with information from a variety of sources.
Forte introduces the concept of a “second brain,” which is a digital system that serves as an external repository for all of your notes, ideas, and information. This system is designed to help you capture information quickly, organize it effectively, and retrieve it easily when you need it.
In order to build a second brain that works well, you need to crack the code (i.e. C-O-D-E). Each letter stands for one of the four steps for building a second brain:
The CODE acronym stands for Collect, Organize, Distill, and Express, and it is a framework for processing and using the information that you capture in your second brain.

Here’s a breakdown of each component:

Collect or Capture:

This is the first step in the process, and it involves capturing all the information that comes your way, whether it’s notes, ideas, articles, or other resources. The key is to capture this information in a way that is quick, efficient, and easy to access later on.

We’re surrounded by information all day. This information can be external – such as books, articles, quotes – and internal, such as insights and memories. When you encounter a piece of information you want to remember, you should capture it. You can do that by taking notes or a screenshot, bookmarking an article, or even recording a quick voice note.

Don’t capture things because you think you should even when you don’t feel any connection to them. You’ll end up with way too much information that doesn’t mean very much to you. Instead, try and capture only information that you find very interesting or important or things that inspire you.
It is important to centralize the knowledge you capture. There are many types of digital tools that enable you to capture these knowledge assets. Whatever method you use, all of these assets should lead back to your second brain.
Forte recommends using a digital note-taking tool, such as Evernote or Notion, to capture and organize your information. He also recommends using templates and macros to streamline your note-taking and make it more efficient.
Actionable Advice
Think back on your last 24 hours and capture everything you feel was important and urgent. You don’t need to capture many things. For example, Tiago Forte, creator of the CODE system, captures on average just two assets a day.


Once you have collected your information, the next step is to organize it in a way that makes sense to you. If you don’t organize it, it will be overwhelming instead of inspiring. This is where the PARA system comes in, as it provides a flexible framework for organizing information based on its context and purpose instead of by subject category as we sometimes tend to do. For example, you don’t organize your kitchen by food but rather by context and purpose (the pots are near the stove and the dish rack near the sink).

The PARA system is a framework for organizing information based on its context and purpose. It stands for Projects, Areas, Resources, and Archives.


Projects are short-term objectives, usually with a deadline, that you are actively working toward completing. This includes all the active, ongoing projects in your life. Examples might include work projects, personal goals, or creative endeavors. Each project should have its own dedicated folder where you can store all the notes, ideas, and resources related to that project.
Instead of tackling an entire project, break it up into intermediate packets. These are small, actionable chunks of a larger process. Tackling a project in stages or actionable chunks is more achievable and interruption-proof than trying to tackle a whole project at once. It also enables you to solicit feedback early and often – that way, if you need to change course, you can do so with a minimum of lost labor.

Tag the information and knowledge assets you capture with a cross-section of relevant keywords. For example, if you create a mission statement or meeting minutes then tag them so that you can use the template at a later stage if you need it again.
Each knowledge asset you capture should be assigned to one of these four areas. That way, they’re placed in order of immediate actionability (Projects are the most actionable; Archives the least).
Don’t organize your information as soon as you capture it. Instead, capture it in an inbox and wait until you have a batch of assets to sort through, then organize them. This allows you to view each asset objectively, with a critical eye, and within the larger context of the available information.


Areas are ongoing commitments. This includes all the broad areas of responsibility in your life. Examples might include work, family, health, or personal development. Each area should have its own dedicated folder where you can store notes, ideas, and resources related to that area.


This category includes all the reference materials and tools that you use regularly. Examples might include articles, books, podcasts, or software. Each resource should have its own dedicated folder where you can store notes, ideas, and other information related to that resource. Its a place to store topics you’re interested in exploring but haven’t translated into projects or areas just yet. This could include a bucket list or daydreams.


Archives are for finished projects, areas that are no longer relevant, and interests that aren’t speaking to you right now. This includes all the information that you want to keep for reference, but that is not relevant to your current projects or areas. Examples might include old project notes, completed tasks, or historical records. Each archive should have its own dedicated folder where you can store the information.

The key to the PARA system is to use it consistently and to keep it simple. Forte recommends using a flat folder structure, rather than a deep hierarchy of nested folders. He also recommends using tags and keywords to help you quickly find information within your folders.


This step involves processing the information that you have collected and organized, and distilling it down into its most essential elements. This might involve summarizing an article, extracting the key insights from a book, or synthesizing your notes from a meeting.
You don’t need to summarize the entire article – only the parts that sparked your interest and are relevant to your objectives.

The executive summary should be the first thing you see when you navigate back to a knowledge asset, so put it on top.
Actionable Advice
Set aside 30 minutes, and sit back with an article you’ve been meaning to read. Then, go through the steps of distillation: read the text, highlight key passages, bold critical ideas, and create an executive summary.


The final step in the CODE process is to express the distilled information in a way that is meaningful and actionable. This might involve writing a blog post, creating a presentation, or simply sharing your insights with others.

The CODE framework is designed to help you process and use the information that you capture in your second brain in a way that is efficient, effective, and actionable. By following these four steps consistently, you can build a second brain that helps you stay organized, productive, and focused on your goals.

Actionable Advice
Clear your digital workspace. Archive all your old files. When you have to sort through hundreds of old files, it is the biggest deterrent to building an effective second brain. Once you have a fresh clean space, ask yourself what projects do you have on the go right now. Take your most important projects and assign them folders.
Read the book to see more about choosing the right tools, creating an effective folder structure, and developing a tagging system that works for you. Forte also provides tips for capturing information quickly and efficiently, such as using templates and macros.
Use your second brain to be more productive and creative, to brainstorm ideas, track your progress on projects, and stay focused on your goals. You can also integrate your second brain with other productivity tools and techniques, such as time-blocking and the Pomodoro technique.
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About the Author
Photo of NicoleMy name is Nicole and I created this website to share the tools that keep me organized and productive and help me reach my goals. I hope that you will find them helpful too.

The content on this page serves to provide an introduction to the book and to help you understand, recall, and apply the main principles of the original book. It is an unofficial resource and is in no way affiliated with, authorized, approved, licensed, or endorsed by the authors, publishers, or any related entities of the original book. All rights to the book and its contents belong to the original copyright holder.
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