It is very easy. Once you have the wheel off, you carefully(so you don't chip the paint finish on the caliper with ill aimed tools) use a small punch to tap the retaining pins in towards the differential, and pull them out. There will be a small spring plate under the pins that put inward pressure on the pads that will pop out, but not too forcefully. Now, use either a brake piston spreader or, you can (VERY CAREFULLY) compress the pads away from the rotor with a pair of channel locks. If I was to do that, I take a length of rubber hose and slice it so I can fit it over the plier jaws and secure it with electrical tape. Once you get a small amount of space between the pad and the rotor, use a small(10") prybar and gently press the piston into the caliper completely being careful to not gouge the rotor. Slide the old pad out, and clean the pad sliding surfaces inside the caliper. Insert the new pad and move to the next one. Do this process in full for each pad, beforevmoving to the next one. Reinsert the spring plate and retaining pins and use a small punch to tap the pins back into place. You may have to press the plate into place with one hand to get the pins installed properly. Once that's done, reinstall the wheels, and before driving the car, DON'T FORGET TO DO THIS. PUMP THE BRAKE PEDAL SEVERAL TIMES TO PUSH THE PISTONS AND PADS BACK AGAINST THE ROTORS. The pedal will get firm when that is done. Skipping that step will cause the pedal to go to the floor the first time you need to use it to stop. If you forget, and you are lucky, you will just back further down the driveway further than you want, unlucky and you will take out your garage door, your neighbors car, your house, mailbox, etc.
Drive your car like it was meant to be driven. It may be a piece of art, but life is too short to just look at it sitting still.