There are three AI coding agents worth your evening and two ways to run each one. Picking wrong costs you a night, so 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.