The first episode of the OCDevel Claude Code arc, the show that climbs from driving one session by hand all the way to a pipeline that ships to production while you're on the beach. This one is the on-ramp: everything you need to be genuinely productive in your first session, with no single primitive over-explained. What we cover: - **The core agentic loop** — gather context, take action, verify, repeat — and the part most people miss: you're *inside* the loop. How to steer mid-run with the escape key and with typed corrections, how the tiered permission prompts gate shell commands and file edits, and how checkpoints let you rewind a bad edit by tapping escape twice. See [How Claude Code works](https://code.claude.com/docs/en/how-claude-code-works) and [Configure permissions](https://code.claude.com/docs/en/permissions). - **CLAUDE.md, your project memory** — what it is, where the user / project / local files live, what to put in (specific build and test commands, conventions, "always/never" rules) and what to leave out, why you keep it under ~200 lines, and the newer auto-memory system Claude maintains alongside it. Reference: [Memory](https://code.claude.com/docs/en/memory). - **/init** — generate a starter memory file from your codebase, why it's safe to re-run, the opt-in guided flow, and why the draft is a starting point you refine, not a finished file. - **Sessions and resume** — work is saved continuously; pick up exactly where you left off with `claude --continue` or the `--resume` picker, and the difference between resuming, forking, and starting fresh. Reference: [Manage sessions](https://code.claude.com/docs/en/sessions). - **The day-one pitfall** — context degradation, in both forms (the never-ending session and the bloated CLAUDE.md), how to recognize it, and the habits that fix it: clear between tasks, compact with focus, keep memory lean. Recency notes for mid-2026: Claude Code is on the 2.1 line with the native installer now recommended over npm, and your default model depends on your plan (Opus 4.8 on Max/API, Sonnet 4.6 on Pro). See [Model configuration](https://code.claude.com/docs/en/model-config). Next episode: settings.json, permissions, and plan mode in depth.