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How to Use Claude Code: A Complete Beginner's Guide (2026)

Claude Code is an AI-powered coding assistant that helps developers write, debug, and refactor code. This guide covers setup, key features like code generation and explanation, and practical tips for integrating it into daily development workflows.

Background

Claude Code is Anthropic's official command-line tool for using Claude (a large language model, or LLM) directly in the terminal. It competes with OpenAI's Codex CLI and GitHub Copilot. This guide targets beginners in 2026, when many developers use AI coding assistants as part of their daily workflow. Key prior context: Anthropic released Claude Code in early 2025; it works inside a developer's existing editor or terminal, can read and write files, run shell commands, and manage complex multi-file coding tasks. The tool is particularly known for supporting long-context reasoning (up to 200K tokens), making it useful for understanding large codebases. Understanding this guide assumes familiarity with basic terminal/command-line usage and package managers (npm, pip, homebrew).

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