Not much to it at all.
Possibly the hardest part is remembering that in order to retract the piston in the rear calipers, you either need one of those funny little Borg cube-like tools which fits on a ratchet and lets you twist the piston back, or to remove the e-brake lever on the back of the caliper and just shove it in with a c-clamp or two.
Also, make certain you're using the right ratched head to undo the caliper guide pins. If someone has been into the brakes before you and replaced any of the guide pins, you may have a mix of torx & allen in there. (OEM guide pins were torx, most aftermarket that I've seen are allen. Or is it the other way round?
)
The wrong sized allen bit will feel like it fits a torx head properly, until you give it a pull and round off the tangs of the torx head.