Changing distributor cap/rotor

I'm about to take this on. i already know where the stuff is, but I've never done this before. is it a fairly self-explanatory job? (take off old, put on new?). Are there any easily overlooked screws, bolts, or clips that I should keep an eye out for?

make sure theres no screw on the rotor before you try and yank it off. other than that, dont break the new stuff and dont break the distributor.