Hi! Welcome to the forum, I'm new too!
I think it's great you're getting into horses! However, I do agree with some of the people above me. I would take lessons first, for a few months at least. Main reason I'm saying that is because the first time you fall is scary. (hardest thing about riding is the ground, right?) I'm worried that if you go into horse ownership with the fear you have of getting bucked off, mixed with the newness of it, might end up badly. Get more comfortable riding and around horses in general...whether it be in lessons, on your friends horses, whichever way you can! See how it goes. Owning a horse is a lot a lot of work...blood sweat and tears...in a good way, but it's a whole different kettle of fish then a lot of other different pets. Horses can seriously hurt you, and you can seriously hurt them. Take comfort in the fact that, like you said, your parents can pretty much get you one whenever you are ready (want to adopt me too?), so just take it slow! See how it goes and enjoy the ride. You're young. Ride a lot of horses :)