https://tootalltoby.com/practice/
I came across this site today on Reddit. Basically you can get a free account and they have tons of prints to practice modeling in Fusion (or any cad software really). It’s presented as a game where you start a timer and then once you’re done modeling you ask fusion for the mass of the object and that’s the answer you submit to know if you did it correctly. Obviously you don’t need to rush against a clock to compete but having the check to know you got it right is nice. I’ve done like 4 in a row this afternoon, it’s very engaging.
Mainly I think the really nice thing is you’re also learning to read a print which is something you will eventually want even in hobbyist machining.