This academy teaches Claude Code by default: the desktop app if you are new, the terminal once typing commands feels normal. Codex and Grok Build are here too, for people who already work in them. Answer three questions and I will name one, tell you why, and hand you the free walkthrough for it. No account, no card.
Answer the three questions and we will name one walkthrough. It is free, and it takes about twenty minutes.
One full walkthrough per tool and per surface, so you install the right one once. Every one of them is free.