Utube has several videos, but the short answer is:
Raise bike to be able to get at the caliper.
Look thru the wheel on the left side and see 2 clips on bolts on the caliper.
Remove clips.
On the right side, remove the parking brake pulley and brake cable.
Remove both allen bolts holding on caliper.
Remove caliper, see pads.
Remove rubber boot over parking brake shaft, put a large socket over it to protect it.
Compress piston with a large "C" clamp, pushing piston flush with caliper.
see retaining clip on bolt that holds pads in; remove clip, remove bolt, remove pads. Replace pads.
install bolt and clip that holds pads in.
slip caliper back over rotor.
Install allen bolts.
install clips on allen bolts.
Pump brakes to move piston back to pads.
Install parking brake pulley and cable.
Pretty easy.
Call if you get stuck. Joe