The dense one — made friendly. One small lesson at a time: the gist, a picture of what's happening, live code you can run, and a quick check that teaches you when you slip. Take it slow; use Next when it clicks.
Tip: this page needs to be served (Cloudflare, or a local server) for the live code to work — it won't run from a double-clicked file. The code sandbox uses mock replies, so no API key is ever needed here.