I dont know if i would say cutaways rarely help learning how to pick, its definitely not magic, but it does help in learning about the inner workings of a lock.
If you want a cutaway, you should make it yourself. Dremels only cost forty bucks, roughly the same price as online cutaways.
I have heard negative things about cutaways like that, but this is a schlage cutaway that im thinking of, you posted a link to a kwikset cutaway.