Dude this isn't that kind of game, it's actually less fun the higher your level unless you plan to raid gyms.. and.. that's boring, really is.
So unlike normal pokemon there are no real mechanics you walk around you see pokemons you capture them, the less pokemons you captured before obviously the more cool awesome new stuff you'll get.
Anyone who likes playing pokemon is literally just enjoying walking around and finding pokemons they didn't find before, tracking and everything (gyms are just... you click a bunch of times and you wait and if your thing is bigger than theirs you lower the gym's health, yay)
Trust me just download the thing register an account, go out today for a walk so you can figure out the basics and capture your first stuff, you really really really don't need a high level account, the less pokemons you got the more fun it will be walking around and tracking.