Rotors are simple. Unbolt the calipers again, and use a wire and hang out of the way. Now remove the two LARGE bolts holding the caliper bracket on.

Once the bracket is out of the way, remove the two philips head screws in the rotor, give it a few good whacks in the center near the lug bolts and pull them off.

I'd advise you get your hands on a, impact screw driver to remove the screws. Get one from Harbor Frieght (yeah, cheap tools, but good for those one-time things).

Now, here's the secret. If you get new, or have existing ones turned, Wash them on dish-washing detergent before installing, and keep your fingers off of them. The oils will ruin them. You want them to be oil-free! Use rubber gloves if you have to.

Good luck!