Claude Code
Ultimate Claude Code Guide
A start-to-finish guide to running Claude Code well, gathered into one reference.
Published March 2026
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Claude Code is a tool from Anthropic that lets you use AI directly in your terminal to build software. Instead of copying code from a chat window, Claude reads your files, writes code, runs commands, and fixes bugs on its own inside your actual project. Out of the box it forgets everything between sessions. This guide fixes that with persistent memory, self-learning, and zero interruptions.
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