A Second Brain You Can Actually Find Things In
October 6, 2026 · Rich Benvin
Collecting information is easy. The useful skill is finding the right note when it is time to decide, create, or act.
Save for a future use
Before you save another article, ask what future question it might answer. A short note about why you saved it often matters more than a complicated tag system. “Useful example for onboarding clients” is more helpful than a pile of generic bookmarks.
Create one inbox for new material. Review it regularly and move useful items into a small set of projects or topics. Keep the source URL and date. If the information is likely to change, add a reminder to verify it before you reuse it.
Keep project notes close to actions
A project note should answer three questions: what are we trying to accomplish, what do we know, and what happens next? Add links to supporting notes rather than copying the same text everywhere.
Suppose you are redesigning a website. Keep the audience, approved headlines, references, open decisions, and launch checklist in the project home. When the project ends, archive it with a short summary. The next redesign then has a useful starting point.
Use AI as an index, with sources
AI can summarize a collection or suggest related themes, but a summary without links is difficult to audit. Ask it to preserve the original source references and distinguish direct evidence from inference. If the tool cannot access a file, it should say so.
Begin with a small, non-sensitive collection and test retrieval. Ask a question whose answer you already know. Can the tool locate the relevant passage? Does it confuse similarly named projects? These checks reveal limitations before you rely on it for important work.
Choose a home you can leave
Portable exports matter. Markdown, text, and common document formats make it easier to keep your notes if a service changes. Obsidian emphasizes local files; other workspaces offer different collaboration and convenience tradeoffs. Choose around your actual use.
Do not migrate a thousand notes before testing ten. Try the new system on one active project, including mobile capture, search, and export. A smaller working collection is often more valuable than a perfectly organized archive you never open.
Review what becomes useful
At the end of the week, mark the notes you actually used. Notice which capture habits led to action and which produced clutter. Delete or archive material that no longer serves a purpose.
A second brain should make thinking easier, not create another obligation. Keep a small “in use” collection, a larger archive, and a predictable review habit. Your future self needs a path back to good ideas.
Try this AI prompt
Using these notes, create a project brief with known facts, open questions, and next actions. Attach a source label to every factual claim. Do not invent missing details. Notes: [paste notes with source labels].
Your next small step
Open the Bookmarks tool, put one idea from this guide into practice, and review what changed after a week. Keep the part that helps; simplify the rest.
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