Guides
Guides
Step-by-step help for AI assistants that work in your terminal. Pick your tool. Each guide says what to type and what you should see.
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Claude Code
All Claude Code guides- Install Claude Code on a Mac or on WindowsInstall Claude Code with one copied command, check that it works, and sign in with a paid Claude plan. Includes fixes for the most common install errors.
- Your First Session with Claude CodeStart Claude Code in a project folder, type your first request, answer its permission questions, and learn how to stop it and how to leave the session.
- Install a Skill or Plugin in Claude CodeGive Claude Code a new superpower: install a plugin from Anthropic's marketplace, or add a skill folder by hand, then check that Claude Code can use it.
- Add an MCP Connector to Claude CodeConnect Claude Code to another app or service with one command, check that the connection works, and learn where Claude Code saves the connector.
Codex CLI
All Codex CLI guides- Install Codex CLI on a Mac or on WindowsInstall OpenAI's Codex CLI with one copied command, check that it works, and sign in with your ChatGPT plan or an API key. Includes common install fixes.
- Your First Session with Codex CLIStart Codex in a project folder, type a first request, choose how much it may do without asking, and learn how to interrupt it and how to quit the session.
- Install a Skill in Codex CLIGive Codex a new superpower: install a curated skill with one line, or copy a skill folder into the right place, then pick it from the skills menu.
- Add an MCP Connector to Codex CLIConnect Codex CLI to another tool or service with one command, check the connection inside a session, and learn where Codex saves your connectors.
Gemini CLI
All Gemini CLI guides- Install Gemini CLI on a Mac or on WindowsInstall Node.js, then Google's Gemini CLI with one command, check that it works, and sign in with a Google account. Includes fixes for common errors.
- Your First Session with Gemini CLIStart Gemini CLI in a project folder, type a first request, answer its permission questions, and learn how to cancel a request and how to quit Gemini.
- Install a Skill in Gemini CLIGive Gemini CLI a new superpower: install an Agent Skill from a Git repository with one command, confirm it, and check that Gemini found the skill.
- Add an MCP Connector to Gemini CLIConnect Gemini CLI to another tool or service with the gemini mcp add command, check the connection, and choose whether it works in one project or in all.
Any agent
All Any agent guides- How to Open the Terminal on a Mac or on WindowsThe terminal is the window where you type commands. Open it on a Mac or a Windows PC in under a minute, see what it looks like, and what to do if it fails.
- Folders in the Terminal: cd, ls and mkdirLearn what a folder is in the terminal, see where you are, list files, make a new project folder and go into it on a Mac or a Windows PC, step by step.
- Skills, Agents and Connectors ExplainedWhat skills (superpowers), subagents, hooks, slash commands, MCP connectors and note files are, and where each lives in Claude Code, Codex and Gemini.
- The Note File: CLAUDE.md, AGENTS.md and GEMINI.mdYour assistant reads one note file at the start of every session. Learn its name for each tool, where to put it, what to write and how to keep it short.
- What AI Assistants Cost: Plans, API Keys and LimitsPlan or API key? How Claude Code, Codex and Gemini CLI charge you, what happens at the usage limit, and five habits that keep your bill free of surprises.
- tmux in 5 Commandstmux keeps your terminal programs running after you close the window or lose the connection. Learn the five commands you need, plus panes and scrolling.
- Run an AI Assistant on a Server with SSH and tmuxConnect to a server over SSH, run your assistant inside tmux so it keeps working after you disconnect, sign in without a browser, and stay safe.