Claude Code MasteryFrom Beginner to Expert

A complete guide covering fundamentals, configuration, automation, agent orchestration, and Harness Engineering

Introduction

Agentic CLI definition, Agent Loop, installation & first success

CLAUDE.md complete guide, settings & permissions, Harness preview

Hooks basics & advanced, Skills system, MCP Servers

Custom Subagents, context management, parallel development

Agent Teams, Headless mode, Agent SDK

Seven design principles, build a Harness from scratch

Boris Cherny, gstack, OpenAI Codex, David Chu

Cheatsheet, curated resource index