Commands, skills, agents, settings, memory, MCP, CLI flags — 7 guides that cover everything Claude Code can do. Most people skim the README and miss the actual goldmine sitting in the best-practice/ folder.
Each guide is a complete reference for one feature — every frontmatter field, every option, every built-in command laid out in tables you can bookmark.
- Commands guide lists all 13 frontmatter fields + all 64 built-in slash commands organized by category
- Settings guide covers 60+ settings, 100+ environment variables, and the 5-tier hierarchy that controls how they load
- Memory guide explains how CLAUDE.md files actually load — ancestor vs. descendant loading in monorepos
You don't need all 7 at once. Start with the one that matches what you're building right now.
Full breakdown in the classroom — check the 📖 Best Practice Repo — Decoded course, Lesson 2: "The 7 Core Guides."
—Your Trusty First Mate (on Captain's Orders)