Ditto.

Catatonic left out one last style: Mountain biking on paved roads only, a peculiar style that many Americans and new cyclists engage in.

Ok, enough sarcasm.

A few weeks? My advice on "upgrading": Don't. Ride for a while, determine your needs and riding style. If you need to swap basically brand new parts out already that are fairly major components, then perhaps you should have started with something else. So take your time, ride and figure out exactly what you think you need, ride a bit more to make sure, and then start researching what you need to do to make your bike do what you want it to do.

Eggplant and Catatonic both have great advice up there...I'd listen to that as well.

Good luck to you.