Free guide

How To Build An AI Second Brain

Step-by-step guide + the one Claude skill that does it for you. Install Obsidian, install the skill from GitHub, feed it your notes, and watch your second brain grow. Never forgets, understands connections, gets smarter the more you use it.

Step-by-step guide: install Obsidian, install the skill, run it, feed it your data
What to feed your brain first for the strongest foundation
5 things you can build: client databases, session memory, AI chief of staff, competitor intel, content research
How the brain gets smarter every session (hot cache system explained)

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Step-by-step guide to building an AI second brain with Claude and Obsidian. One skill builds the whole thing for you. Never forgets, gets smarter every session.

A look inside

What's inside

What You'll Learn

What an AI second brain actually is and why it beats a plain notes app How to install Obsidian and the free Claude skill that builds the brain for you The exact commands to feed it data, research topics, and query it with citations What to feed it first and the powerful systems y

What You're Building

You're building an AI second brain that never forgets, understands the connections between all your notes, research, and projects, and gets smarter the more you use it.

What You Need

Claude Code installed About 10 minutes for setup Your notes, files, and research (anything you want the brain to know) No coding or technical experience required

About the author

Cooper Simson

Founder of Actionable AI. 30,000+ operators read the newsletter.

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Questions, answered

Is this guide free?

Yes. Enter your details and you can open the full guide immediately.

Do I need to know how to code?

No. The guide explains the work in practical steps and calls out technical details only when they matter.

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