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Plain-word guides and superpowers for Claude Code, Codex and Gemini.

Any agent guides

Guides that work with every CLI coding agent: terminals, memory files, tmux, servers and costs. Plain words, checked against the official docs.

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. 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.