Technical knowledge compounds—capture it for later use. Obsidian (local-first, markdown), Notion (collaborative), or Apple Notes (simple). The system matters less than actually capturing.
PARA: Projects, Areas, Resources, Archives—organize by topic for knowledge bases. For technical notes: commands that worked, errors and fixes, design decisions and why.
The habit: capture immediately in your system. Use tags and backlinks for connections. Review periodically—what's still relevant, what to archive.