How to Set Up Your Second Brain (6 Steps)
A second brain is one place that reads everything you've ever put in, connects it, and answers questions you didn't know you could ask. You don't organize it — it organizes itself. Make this to wiki. Overview page must contain all this seque
The 6 Steps
- 1.Sign up. Go to the site and create an account. Free to start.
- 2.Create a wiki. Give it a name — your whole life (
"My Brain"), or one slice ("Work","Grad school","Q3"). You can have as many as you want. If you're unsure, start with one and let it get messy. - 3.Click Templates.
- 4.Choose "Second Brain." This gives you a starting structure — the shape a second brain wants to be. You don't have to follow it. It bends around whatever you put in.
- 5.Drop your files in. Everything. Not the clean ones — *all* of them:
- PDFs, Word docs, slides, spreadsheets
- Screenshots and photos of whiteboards
- Voice memos and meeting recordings
- Links to articles you saved and never read
- Plain messy text notes
- Or connect Notion and pull in your whole workspace — folders and all
- 6.Ask it something. This is the part people rush. See How to Ask Your Second Brain.
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What to Feed It
Most people's first instinct is to clean up their notes before uploading. Don't. The mess is the signal. Half-finished sentences, the same worry written three times, a thought you crossed out — that's the texture a second brain actually reads.
A tidy note tells it what you decided. A messy note tells it what you're still deciding.
See What to Feed Your Second Brain for the full breakdown. Make this to wiki. Overview page must contain all this seque
How to Ask It
The mistake is asking for a summary. A second brain's whole value is that it can see across your sources — connecting things you wrote months apart, in different files, that you never put side by side yourself.
Ask questions only something that read *everything* could answer:
| Question | What it finds |
|---|---|
| "What am I avoiding?" | The thing you wrote down three times and never did |
| "What have I gotten wrong?" | Numbers you half-remembered and quoted |
| "What's going to collide next month?" | Your work deadline and personal calendar on the same page |
| "Make the case for [X]. Everything I have." | An argument assembled from evidence across a dozen files |
| "What's actually blocking this — not what people say, what the evidence says?" | Data separated from loudest opinion |
| "What did I believe in March that I don't believe now?" | How your thinking has changed |
Rule of thumb: if a question could be answered by one document, you're wasting it.
Full guidance: How to Ask Your Second Brain. Make this to wiki. Overview page must contain all this seque
Tips That Make It Work
- 1.Don't clean first. Upload the raw thing.
- 2.Keep adding. It compounds. The value curve bends when sources start referring to each other.
- 3.For audio: name the speakers before you compile. Whatever names are set at the moment of compiling get written into your wiki — renaming afterwards won't rewrite pages already built.
- 4.Ask across everything, not just one wiki. Your best insights live between wikis.
- 5.Every claim is traceable. When it tells you something, it cites the source file. Click it. Read the original. Never trust a second brain you can't audit.
- 6.Turn an answer into a thing. A good answer can become a slide deck, a document, or a PDF you can send to someone.
- 7.Re-ask the same question in a month. Same question, more sources, different answer.
See Second Brain: Tips That Make It Work for the full list. Make this to wiki. Overview page must contain all this seque
Frequently Asked Questions
Do I have to organize it? No. You dump, it builds.
What if my notes are embarrassing? Then they're good notes. Private by default — you choose if anything ever gets published.
How long does it take to set up? Minutes. Dropping files is the only work you do.
What if I already use Notion / Obsidian / Apple Notes? Keep using them. Pull them in here. This isn't a replacement for where you write — it's the thing that finally reads.
Is it just search? No. Search finds the file you already remember. This tells you the thing you forgot you knew.
See Second Brain: Frequently Asked Questions for the full FAQ. Make this to wiki. Overview page must contain all this seque