zerotoclaude

Question 01 / 07

What is plan mode for?

Speeding up Claude's responses.
Letting Claude research and write a step-by-step plan before any edits, so you can redirect before code moves.
Saving the conversation transcript to disk.
Switching between Opus, Sonnet, and Haiku mid-session.

Question 02 / 07

Which of these belongs in CLAUDE.md?

Today's tasks and the bug you're currently debugging.
Project commands, layout, conventions, and hard-won lessons — anything worth knowing across every session.
Your real API keys and credentials.
The full contents of every file in the project.

Question 03 / 07

When Claude asks permission to run a Bash command, what should you check first?

Question 04 / 07

Which best describes how Claude reads your project?

It loads the entire codebase into context at session start.
It opens files on demand using Read, Glob, and Grep — only what it needs for the task at hand.
It searches the public internet for your code.
It can only see files you paste into the chat.

Question 05 / 07

What's the difference between a slash command and a skill?

They're identical with different syntax.
Slash commands are simple reusable prompts; skills add tool allowlists, supporting files, and auto-surfacing on relevant user requests.
Slash commands are paid; skills are free.
Skills only work in Module 4 of the docs.

Question 06 / 07

What's the single most important habit when Claude proposes a diff?

Question 07 / 07

How do you install Claude Code on a fresh machine?

Download an installer from whichever site is highest in search results.
Run `npm install -g @anthropic-ai/claude-code` (or the equivalent via your package manager).
Copy the binary from a friend's machine.
It's automatically installed with Node.js.

Claude Code Fundamentals — the exam