bookJanuary 4, 2026
Building a Second Brain
by tiago-forte

A methodology for capturing, organizing, and retrieving digital information using the CODE framework and PARA organization system.
Core Framework: CODE
The book centers on four steps for managing knowledge:
- Capture — Save only what resonates, not everything
- Organize — Sort by actionability using PARA (Projects, Areas, Resources, Archive)
- Distill — Use progressive summarization to surface key insights
- Express — Turn knowledge into creative output
Key Concepts
- Progressive summarization — Layer highlights: bold the best parts, then highlight the boldest, creating quick-scan notes
- Intermediate packets — Break work into reusable components (outlines, drafts, research) that compound across projects
- Slow burns vs heavy lifts — Gather material gradually rather than all at once under deadline pressure
The PARA Method
Organize everything into four categories based on actionability:
- Projects — Active work with deadlines
- Areas — Ongoing responsibilities without end dates
- Resources — Topics of interest for future reference
- Archive — Inactive items from the other three
Connections
The methodology complements traditional Zettelkasten approaches. While BASB focuses on action and project delivery, building-a-second-brain-and-zettelkasten explores how combining it with Zettelkasten maximizes both productivity and deep knowledge building. See also second-brain-system for how these principles apply to this knowledge base.