One difficulty with doing automotive brakes is that sometimes the rotors can have rust build up inside the hat that prevents them from sliding off the hub. No amount of persuasion, heat, etc. was going to get the original ten year old rotors off the back of our VW. I ended up having to cut the disc and into the hat with a grinder, then slam a chisel into the cut to expand them enough to get them off.
The one mistake people make is not making sure the caliper slides freely on the bracket and the pins are clean, greased and the boots are good. If not, they won't function properly and you'll be replacing the inner pads again in no time and probably the rotors too, because the outer pads will look fine while the inners are wearing away until they scrape.