First of all make sure you have these things:

• 12mm wrench or socket/ratchet
• Brake Cleaner
• Brake Piston Clamp or whatever its called OR a C-Clamp works fine just have a big enough one.
• New Brake pads.

1. always use jack stands
2. take off wheel
3. Use 12mm wrench or socket to take out the bottom bolt of the caliper.
4. Lift up the caliper
5. Take the old pads off. They may be snug but they just pull off.
6. Put on the new pads. Reuse the top and bottom metal pieces that you took off before. I had to take the shims that they came with off cuz the caliper wouldn't go down with them on.
7. Use the clamp to compress the piston back into the caliper then put it down over the brakes and put the bolt back in. Be sure to get the bolt pretty tight this is what makes your car stop! (but don't break it)
8. Now clean everything real good with brake parts cleaner. Don't use degreaser its not the same.
9. Now put the wheel back on. Be sure to start each nut by hand so you don't crossthread them.
10. repeat on other side