I learned to knit using this video: https://youtu.be/24lR2IRS57A?si=1oKzp88Kqgt2ZfgT
It's a classic garter stitch scarf, so very basic. But it's good for getting you in the groove and learning to do things like cast on and bind off.
As other people have said, continental knitting is probably the way to go if you're coming from crochet.
I agree, it's a bit annoying. Maybe you could put it in desktop mode, and configure it to turn screen off but not go to sleep? It'll still do updates then.