Dude your fine. You will never learn if you do not ask. That was exactly like what happen to my bronco. Good news though when you replace the wheel cylinder and get you pads it will not take much to bleed out the air in the lines there. As far as you drum, do not use water. If have or can get break cleaner and wipe it down really well. you should be fine.

Maybe someone can chime in if I am wrong but with the american drum car there is an adjuster at the bottom of the drum assembaly and it needs to be adjuster when everything is back togethor so that the pads just barely touch the drum when you turn the wheel. Good luck with it. At least you are on the right track and should have it fixed no time.