Claude Code Tutorial: Learn from Scratch

Welcome to your Claude Code learning project! This tutorial teaches you how Claude Code works and how to harness its power using the .claude folder. Whether you’re new to AI-assisted development or looking to master Claude Code, start here!

Watch The Full Tutorial On YOUTUBE

• https://youtu.be/lkc-F5I8gFE?si=MFLyX0RVkcHrM2nr

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What is Claude Code?

Claude Code is an intelligent coding assistant that helps you write, review, debug, and understand code. It learns from your project’s rules and works the way you want it to work.

Think of it like having an expert developer as a pair programmer—but one that understands your project’s unique style and requirements.

Key Capabilities:

• 💬 Ask questions about your code
• 🐛 Debug issues with detailed explanations
• ✨ Generate code following your standards
• 📚 Learn best practices for your project
• 🤖 Automate tasks with custom skills and agents

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The .claude Folder: Your Command Center

The .claude folder is where you teach Claude Code about your project. It’s like a configuration hub that tells Claude:

• How to code (your standards and style)
• What it can do (custom skills for tasks)
• How to specialize (different agents for different jobs)
• What it remembers (persistent memory across sessions)

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📁 Folder Structure Overview

Here’s what’s inside .claude and what each part does:

.claude/
├── CLAUDE.md              # 📖 Your project's "rulebook"
├── skills/                # 🛠️ Custom tools for specific tasks
│   ├── fetchAPI/          # Fetch data from APIs
│   ├── migrate/           # Move data between locations
│   └── visualize/         # Create visualizations
├── agents/                # 🤖 Specialized Claude personalities
│   ├── code_reviewer/     # Expert code reviewer
│   └── orchestrator/      # Workflow coordinator
├── agent-memory/          # 🧠 What Claude remembers
├── hooks/                 # 🪝 Custom automation triggers
├── settings.json          # ⚙️ Global configuration
├── settings.local.json    # 💻 Local machine settings
└── scheduled_tasks.lock   # 🔒 Task scheduling file

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📚 Core Components Explained

1️⃣ CLAUDE.md – Teaching Claude Your Standards

This file is like an instruction manual for Claude Code. It defines:

What it covers:

• 🎨 Coding Style – PEP 8 for Python, naming conventions
• 🏷️ Type Annotations – Using type hints for clarity
• 📝 Documentation – How to write good docstrings
• 📦 Dependencies – Managing libraries and versions
• 📂 Project Organization – How files should be structured
• 📋 Best Practices – Error handling, version control, etc.

Why it matters: When you write code or ask Claude to write code, it reads this file and ensures everything follows your project’s rules. It’s like having a style guide that Claude automatically applies!