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Chapter 3: Your Command Center — Terminal, Git, and Claude Code

This is the chapter the expensive courses skip — the one that assumes you "already work in a terminal." We don't assume. We build.

By the end of this chapter, the terminal stops being the hacker screen from the movies and becomes what it actually is: the most direct way to talk to your computer, and the room where your AI agent works. You'll navigate it, protect yourself with Git, and run your first real Claude Code session.

Engineers: skim 3.1–3.3 at speed, but do run 3.4 and 3.5 — the session habits there are the foundation Chapters 4–10 build on.

What you will learn

  • Move around the terminal with a small set of common inspection and navigation commands.
  • Understand files, folders, and paths the way the machine does.
  • Use Git to checkpoint, compare, and selectively restore tracked files.
  • Run your first full Claude Code session — brief, watch, review, commit.
  • Adopt session safety habits and recognize what Git can and cannot recover.

Builder principle

The terminal is not a test of whether you belong. It's a room, and this chapter hands you the keys.

Watch with this chapter

Real talk

Everybody who now lives in the terminal once stared at that blinking cursor with no idea what to type. Every single one. The gap between them and you is not talent — it's about six commands and two weeks of light practice. This chapter is those six commands. The two weeks start today.

Before you start

Complete Setup first — terminal, Claude Code, Git/GitHub authentication, Chapter 8's Node dependency, and ~/builds. Allow 45–60 minutes; account or platform troubleshooting may take longer.

Lessons in this chapter

Chapter checkpoint

Complete Chapter 3: Recoverable first session, save the evidence, then score your first attempt with the shared rubric.