apple likes people that gets confused when buying their products lol.
I guess that's why they have a store full of Geniuses (do they still call them that?) to help you with your purchase. That used to seem like overkill but more and more it's like buying a car. Do you want the base trim package or the premium? How you set for cases and chargers? Make sure you get the matching Pencil. No not that one the more expensive one. And how about AppleCare?