Getting Started with Claude Code
Claude Code is Anthropic's agentic coding tool that lives in your terminal. It reads your codebase, writes code, runs commands, and iterates — all from natural language instructions. This guide walks you through setup to your first productive session.
1. Install Claude Code
Claude Code is a CLI tool from Anthropic that runs in your terminal. Install it globally with npm: npm install -g @anthropic-ai/claude-code. You'll need Node.js 18+ and an Anthropic API key. Once installed, run claude in any project directory to start.
2. Create Your CLAUDE.md File
CLAUDE.md is the most important file in any Claude Code project. It tells Claude about your codebase — architecture, conventions, testing patterns, and deployment steps. Place it at the root of your repo. Think of it as onboarding documentation, but for your AI collaborator. A good CLAUDE.md reduces hallucinations and keeps Claude aligned with your team's practices.
3. Configure Your Workflow
Claude Code reads your project structure, git history, and documentation to build context. Configure it with a .claude/settings.json file for project-specific behaviors. Set allowed tools, permission levels, and default behaviors. Teams can share configuration through the repo so every developer gets a consistent experience.
4. Start with Simple Tasks
Begin with low-risk tasks: generating tests, writing documentation, refactoring small functions, or explaining unfamiliar code. As you build trust in the output, graduate to larger tasks like implementing features, debugging complex issues, or building multi-file changes. Claude Code works best when you give it clear, specific instructions with enough context.
5. Learn Agentic Patterns
The real power of Claude Code comes from agentic workflows — multi-step tasks where Claude plans, executes, validates, and iterates. Learn to use sub-agents for parallel work, hooks for automated quality checks, and context management to keep Claude focused. These patterns transform Claude Code from a code generator into a development partner.
Learn Claude Code the structured way
Fluent offers 115 interactive lessons with terminal simulations, quizzes, and Mori, an AI tutor — from setup to advanced agentic workflows. Free forever.
Frequently Asked Questions
Do I need to know how to code to use Claude Code?
Not necessarily. Claude Code can generate entire applications from natural language descriptions. However, understanding basic programming concepts helps you review and guide the output. Fluent offers both a Developer path (for experienced programmers) and a Vibe Coder path (for non-programmers).
How is Claude Code different from GitHub Copilot or Cursor?
Claude Code is an agentic coding tool — it doesn't just autocomplete lines, it executes multi-step workflows. It can read your entire codebase, run terminal commands, create and edit multiple files, run tests, and iterate on its own work. Copilot and Cursor are primarily editor-based autocomplete tools.
What does Claude Code cost?
Claude Code requires an Anthropic API key with usage-based pricing. Costs vary by model and usage. Most individual developers spend $20–100/month. The Fluent course teaches cost control techniques to optimize your spend.
Can Claude Code work with any programming language?
Yes. Claude Code works with any language or framework — JavaScript, Python, Rust, Go, Ruby, Java, and more. It reads your project files and adapts to whatever stack you're using.