hi, i just discovered this site about a week ago... i'm interested in learning photography.. so i want to buy myself a nice beginner's SLR. bear in mind that i dont know ANYTHING about slr cameras.. ive never used one before, and i dont really know anyone who could teach me, so i think im just going to try to self-teach myself with some books and internet resources... what kind of cameras would you recommend? what kind of features do i need? (or dont need?) thanks!!