Arpan Patel wrote a nice consolidated Claude Code reference: the directory layout, CLAUDE.md the way Anthropic’s Boris Cherny writes it, skills, subagents, MCPs, the underused commands. The whole guide turns on one shift:

Claude Code clicked for me once I quit treating it like ChatGPT in a terminal. The mental model flipped from “I need to write this code” to “I need to set Claude up to write this code well.” Setup is the work. Execution is verification.

If you use Claude Code daily, bookmark it.