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How to ThinkIn the Age of AI

AI Second Brain

A knowledge management system designed specifically for AI agent consumption. Built with typed frontmatter, explicit relationships, and machine-traversable structure so agents can reason with your knowledge rather than just search it. Typically implemented as an Obsidian vault or structured markdown repository.

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Building a Second Brain for AI Agents

How to architect an Obsidian vault with typed frontmatter so AI agents can reason with your knowledge, not just search it.

Context Engineering Principles: The Mental Models I Use Every Day with AI Agents

Named principles for context engineering — less is more, knowledge gardening, structure over retrieval — discovered through daily agent usage, not academic theory.

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AI Second Brain is taught in Build Your AI Second Brain — a guided sequence of 16 lessons.

After completing this path you will have a capture habit that catches thinking before it decays, notes structured so both you and an AI can retrieve them (atomic, identified, context-rich), a personal knowledge graph AI tools can answer from, and the review loop that keeps the system alive. Ask-don't-search becomes your default.

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Find your learning persona in about 2 minutes

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