Chapter map

CH01 · What computers actually are

Files, folders, paths, and "what even is a terminal"

6 lessons · ⏱ ~27 min

0.1 · What is a file? — Everything on a computer is a file
0.2 · What is a folder? — Organizing files into directories
0.3 · What is a file path? — Every file's address
0.4 · File types and what's inside — Extensions tell the computer how to open a file
0.5 · What is a program? — A file full of instructions the computer runs
0.6 · What is the terminal? — Talking to your computer by typing

CH02 · Your first 30 minutes in the terminal

Navigate, create, and manage files like an engineer

12 lessons · ⏱ ~51 min

1.1 · Where am I? — Your first command: pwd
1.2 · What's in here? — List files with ls
1.3 · Going into a folder — Navigate with cd
1.4 · Going back up — Move up one level with cd ..
1.5 · Going home — Jump home with cd ~
1.6 · Make a folder — Create directories with mkdir
1.7 · Make a file — Create files with touch
1.8 · Delete a file — Remove files with rm
1.9 · Delete a folder — Remove directories with rm -r
1.10 · Copy a file — Duplicate files with cp
1.11 · Move and rename — Move or rename with mv
1.12 · Putting it all together — Build a project from scratch

CH03 · Reading and writing files

See file contents, search text, pipe commands together

12 lessons · ⏱ ~47 min

2.1 · See what's inside a file — Read file contents with cat
2.2 · Peek at the start of a file — Preview files with head
2.3 · Peek at the end of a file — See the latest with tail
2.4 · Print text to the screen — Output text with echo
2.5 · Write things into a file — Redirect output with >
2.6 · Append to a file — Add to the end with >>
2.7 · Copy file contents — Combine cat with > to copy contents
2.8 · Find text inside a file — Search text with grep
2.9 · Search across folders — Find text in any file with grep -r
2.10 · Chain commands with pipes — Connect commands with |
2.11 · Count things with wc — Count lines, words, and characters
2.12 · Detective work — Combine your skills to dig into log files

CH04 · Your code has a history

Git & GitHub — never lose your progress again

16 lessons · ⏱ ~93 min

3.1 · Why version control? — What problem version control solves
3.2 · Start a repo — Your first git command
3.3 · Stage your changes — Pick what to save
3.4 · Your first commit — Save a snapshot
3.5 · Making changes — The edit-add-commit cycle
3.6 · View history — Your project's timeline
3.7 · See what changed — Find the differences
3.8 · Undo changes — Your safety net
3.9 · Meet GitHub — Get your code into the cloud
3.10 · Push to GitHub — Upload your code
3.11 · Download projects — Get code from GitHub
3.12 · Create branches — Experiment safely
3.13 · Merge branches — Combine your work
3.14 · Professional workflow — How engineers actually use git
3.15 · Writing good commit messages — Future you will thank you
3.16 · Full workflow challenge — Put it all together

CH05 · How software actually works

Client, server, API, database, cloud — all in one go

14 lessons · ⏱ ~65 min

4.1 · What is code? — The language computers understand
4.2 · Programming languages — Different tools for different jobs
4.3 · What is a website, really? — What's actually happening behind every web page
4.4 · Client vs Server — The two sides of every web interaction
4.5 · HTTP — how computers talk — The request/response protocol of the web
4.6 · What is an API? — The menu of things a server can do
4.7 · JSON — the universal data format — How computers share structured information
4.8 · What is a database? — Where apps store data permanently
4.9 · SQL — talking to databases — The language databases understand
4.10 · Frontend vs Backend — The two halves of every app
4.11 · Tech Stack — How teams pick their tools
4.12 · What is the cloud? — Not as mysterious as it sounds
4.13 · Deployment — Getting code from your laptop onto the internet
4.14 · DNS and domains — How the internet finds websites

CH06 · Talking to the internet

Make real HTTP requests, call real APIs, read real data

12 lessons · ⏱ ~76 min

4b.1 · What is a URL, really? — Every URL is a structured address — learn to read it
4b.2 · Your first curl — Send a real HTTP request from the terminal
4b.3 · Query parameters in action — Add options to URLs and customize what you get back
4b.4 · Status codes are a language — Learn to read what the server is saying with response codes
4b.5 · Request headers — Attach metadata to your requests — including authentication
4b.6 · Sending data — POST requests — GET fetches. POST creates. Learn to send data to a server.
4b.7 · Your first real API — Call JSONPlaceholder from your real terminal — a free public API
4b.8 · What's an API key? — Understand authentication tokens and use them safely
4b.9 · Calling the GitHub API — Explore a production API — public data without a key
4b.10 · Reading API docs — Translate any API doc entry into a working curl command
4b.11 · When things go wrong — Diagnose API errors like an engineer, not by guessing
4b.12 · From curl to code — Every curl command translates directly to real code

CH07 · Building with real tools

Install Node.js, run code, spin up a real server

15 lessons · ⏱ ~103 min

5.1 · Install Node.js — Get JavaScript running on your machine
5.2 · Your first JavaScript — Run JavaScript in an interactive Node.js shell
5.3 · Run a JavaScript file — Put code in a file and execute it
5.4 · What is npm? — The world's biggest library of code
5.5 · Create a project — Set up a real Node.js project from scratch
5.6 · Install a package — Add other people's code to your project
5.7 · .gitignore — what not to track — Keep secrets and auto-generated files out of git
5.8 · Hello World server — Build a real web server in 10 lines of code
5.9 · Run your server — Bring your server to life
5.10 · What is localhost? — Your computer as a server
5.11 · Add routes — Make your server respond to different URLs
5.12 · Serve JSON (build an API) — Make your server speak the language of the web
5.13 · Serve HTML — Serve real web pages from your server
5.14 · Stop and restart — An engineer's edit-test loop
5.15 · Level 7 challenge — Put it all together — build a complete server

CH08 · Claude Code — your AI pair programmer

Build real projects by describing what you want

16 lessons · ⏱ ~110 min

6.1 · What is Claude Code? — Meet your AI pair programmer
6.2 · Install Claude Code — Get Claude Code running on your machine
6.3 · Your first conversation — Talk to Claude Code like a coworker
6.4 · Read code with Claude — Understand any codebase in minutes
6.5 · Create files with Claude — You describe, Claude builds
6.6 · Edit existing code — Make surgical changes to your project
6.7 · Build a project from a description — From idea to working app in one prompt
6.8 · Write effective prompts — Get better results from Claude Code
6.9 · Iterate with Claude — Build features step by step through conversation
6.10 · When Claude gets stuck — Spot the signs and get back on track
6.11 · Review what Claude wrote — Trust but verify — always review before committing
6.12 · Debug with Claude — When something breaks, Claude is your debug partner
6.13 · Git workflow with Claude — Claude Code + professional version control
6.14 · When **not** to use Claude Code — Know when to use Claude Code, Claude.ai, or your own brain
6.15 · Tips and tricks — Power-user patterns for getting more out of Claude Code
6.16 · Level 8 challenge — Build and ship a complete project with Claude Code

CH09 · Claude Skills — teach Claude your workflow

Make reusable skills so Claude works exactly your way

5 lessons · ⏱ ~33 min

6b.1 · What are Claude Skills? — Reusable instructions that teach Claude your workflow
6b.2 · Build your first skill — Plan, write, and organize a SKILL.md file
6b.3 · SKILL.md body and reference files — Write detailed instructions, link external context
6b.4 · Testing and distributing skills — Iterate on skills, share with your team
6b.5 · Skill patterns and best practices — Common patterns, anti-patterns, and habits of great skill builders

CH10 · MCP — connect Claude to everything

Give Claude Code access to databases, APIs, GitHub, and more

5 lessons · ⏱ ~27 min

6c.1 · What is MCP? — How Claude Code connects to external tools, databases, and APIs
6c.2 · Add your first MCP server — One command connects Claude Code to GitHub, databases, and more
6c.3 · Manage and share MCP servers — Organize servers with scopes and share them with your team
6c.4 · Tool Search and working smart — How Claude Code stays fast with dozens of MCP servers
6c.5 · Real-world MCP patterns — GitHub, databases, security, and Claude as an MCP server

CH11 · Context is everything

Manage what Claude knows, remembers, and carries between sessions

5 lessons · ⏱ ~26 min

6d.1 · CLAUDE.md — your project's brain — Give Claude permanent context with a single markdown file
6d.2 · Memory and sessions — How Claude learns from experience, and how you pick up where you left off
6d.3 · Context window — Understand Claude's most important limit — and how to manage it
6d.4 · Spec, plan, handoff — Structure your work so the next session picks up smoothly
6d.5 · Working smart at scale — Subagents, anti-patterns, and the complete context toolkit

CH12 · Advanced Claude Code

Subagents, worktrees, hooks, automation, cost optimization

7 lessons · ⏱ ~44 min

6e.1 · Subagents — delegate like a senior developer — Hand off focused tasks to specialized Claude instances
6e.2 · Worktrees and parallel development — Work on multiple features at once without conflicts
6e.3 · Hooks and permissions — Customize Claude's behavior and set safety guardrails
6e.4 · Headless mode and the Agent SDK — Run Claude automatically in scripts and CI/CD pipelines
6e.5 · Mastery — models, cost, IDE — Pick the right model, manage cost, and integrate with your editor
6e.6 · Agent View — manage multiple Claude sessions on one screen — Dispatch a bug fix, a PR review, and a test investigation at the same time — step in only when needed
6e.7 · Goal — let Claude run itself until a condition is met — Set a verifiable completion condition, and Claude iterates until it's reached — no need to keep telling it to continue

CH13 · Day-to-day engineer skills

Debug, deploy, work like a professional engineer

12 lessons · ⏱ ~81 min

7.1 · Reading other people's code — A systematic approach to understanding any codebase
7.2 · Understanding code you didn't write — How to read a specific function and figure out what it does
7.3 · The debugging mindset — A scientific approach to finding and fixing bugs
7.4 · Debugging with console.log — The simplest and most effective debugging tool
7.5 · Finding answers — How to search effectively when you're stuck
7.6 · Using external APIs — Pulling data from other services into your app
7.7 · Using environment variables for secrets — Keep API keys and passwords out of your code
7.8 · Basic security awareness — Five non-negotiable rules every engineer must follow
7.9 · Deploying to the web — Get your project live for the whole world to see
7.10 · Custom domains — Give your project a real web address
7.11 · The professional engineer workflow — How every tech company in the world ships code
7.12 · What's next — your learning path — You finished the course. Here's where to go from here.

CH14 · Capstone — build a real game

Build a realtime multiplayer tic-tac-toe and ship it live

10 lessons · ⏱ ~77 min

8.1 · When HTTP isn't enough — Why realtime apps need a different kind of connection
8.2 · Plan before you build — Break a real project into pieces before writing a single line of code
8.3 · Set up the project — Initialize the project and install Socket.io with Claude Code
8.4 · Build the game engine — Ask Claude to build the tic-tac-toe rules
8.5 · Matchmaking — pair players up — Build the lobby that pairs two strangers into a game
8.6 · Build the game board — Create the UI that players actually see and click
8.7 · Wire the client to the server — Connect the browser and the server with Socket.io events
8.8 · Test and debug realtime code — Find and fix bugs that only appear when two players interact
8.9 · Polish and ship-ready — Turn working code into a finished product
8.10 · Deploy and celebrate — Put your game on the web and finish the course

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※ This is an independent Traditional Chinese teaching project — not an official Anthropic product. Claude™ is a trademark of Anthropic, PBC.