The complete guide to Claude Code. Opus 4.7, Sonnet 4.6, Haiku 4.5. 1M token context window. 27 hook events. 43 production-tested chapters across 6 topical Parts (Foundation, Workflow, Extension, Context Engineering, Advanced, Reference). Three install tiers. CC 2.1.121+ compatible.
Installation, CLAUDE.md, project structure, first-session orientation, setup troubleshooting.
Content rewrite in progress — see ROADMAP-v5.md for status.