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👋 Welcome to Claude Code Tutorials! Learn more

Quick Start 🚀

Welcome to Claude Code! This is a powerful AI programming assistant that helps you write, understand, and optimize code efficiently.

Install Claude Code

# Global installation
npm install -g claude-code
 
# Or using pnpm
pnpm add -g claude-code
 
# Or using yarn
yarn global add claude-code

Method 2: Using Homebrew (macOS)

brew install claude-code

Method 3: Using Scoop (Windows)

scoop install claude-code

Configure API Key

Get API Key: Visit Claude.ai  to create an account and get your API key

Set Environment Variable

export ANTHROPIC_API_KEY="your_api_key_here"

Or Use Configuration Command

claude config set api-key your_api_key_here

Your First Project

1. Initialize Project

# Create new project directory
mkdir my-claude-project
cd my-claude-project
 
# Initialize Claude Code configuration
claude init

2. Create Project Configuration

Claude Code will automatically generate the .claude configuration folder:

my-claude-project/
├── .claude/
│   ├── settings.json
│   └── commands/
├── CLAUDE.md
└── README.md

3. Start Programming

# Start interactive session
claude "Help me create a simple React component"
 
# Or use file mode
claude -f components.js "Optimize this component's performance"

Basic Usage

Natural Language Commands

# Code generation
claude "Create a user login form"
 
# Code explanation
claude "Explain what this function does" -f utils.js
 
# Code optimization
claude "Optimize this algorithm's performance" -f algorithm.py
 
# Bug fixing
claude "Fix this bug" -f broken-code.js

Project-level Operations

# Analyze entire project
claude "Analyze project architecture and provide improvement suggestions"
 
# Add features
claude "Add user authentication to this project"
 
# Refactor code
claude "Refactor this module for better maintainability"

Common Features

🔧 Code Review

# Check code quality
claude review
 
# Check security issues
claude security-check
 
# Check performance issues
claude performance-check

📋 Documentation Generation

# Generate API documentation
claude docs generate
 
# Generate README
claude docs readme
 
# Generate type definitions
claude docs types

🧪 Testing Support

# Generate unit tests
claude test generate
 
# Run test analysis
claude test analyze
 
# Generate test data
claude test data

Advanced Features

MCP (Model Context Protocol) Integration

# Set up MCP server
claude mcp add
 
# List available MCP servers
claude mcp list
 
# Configure project-level MCP
claude mcp config

Custom Commands

Create custom commands in the .claude/commands/ directory:

// .claude/commands/deploy.md
Deploy current project to production environment, including build, test, and deployment steps

Use custom commands:

claude /deploy

Hooks System

Configure automated workflows:

// .claude/settings.json
{
  "hooks": {
    "pre-commit": "claude review --fix",
    "post-commit": "claude docs update"
  }
}

Best Practices

1. Project Structure

project/
├── .claude/
│   ├── settings.json      # Project configuration
│   ├── commands/          # Custom commands
│   └── .mcp.json         # MCP configuration
├── CLAUDE.md             # Project description
├── src/
└── tests/

2. Configuration File Example

{
  "model": "claude-3-5-sonnet-20241022",
  "temperature": 0.7,
  "tools": ["code_execution", "file_operations"],
  "project_context": {
    "language": "typescript",
    "framework": "react",
    "testing": "jest"
  }
}

3. Writing Good Prompts

# Good prompt ✅
claude "Create a TypeScript React component with user login form, using Tailwind CSS styles, including form validation"
 
# Bad prompt ❌
claude "make login"

Troubleshooting

Common Issues

🚫

API Key Error: Check environment variables or use claude config show to view current configuration

⚠️

Network Connection Issues: Ensure network connection is stable, or configure proxy settings

Debug Mode

# Enable verbose logging
claude --debug "your command"
 
# View configuration
claude config show
 
# Check connection
claude health check

Next Steps

Congratulations! You’ve successfully set up Claude Code. Next, you can:

  1. 🎓 Complete Tutorial - Learn all features in depth
  2. 🔧 Resources & Tools - Explore more useful tools
  3. 📖 API Reference - View detailed API documentation
  4. ✨ What’s New - Learn about latest features

Tip: Join our GitHub Community  to share experiences with other developers!

Need help? Check our Troubleshooting Guide  or Contact Support .

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