Brake pads are one of the easiest things to do.  Loosen the pin (5mm hex).  Remove bolts/lockwashers/washers.  Remove caliper now hanging by a hose.  Remove above loosened pin.  Remove old pads.  Shove piston back into it's hole (I use a c-clamp).  Install new pads, replace pin, replace caliper, replace bolts, tighten to torque specs listed in the manual.  First couple of pumps on the brake lever will be light until the pads contact the rotor.  Oh Yeah, the manual mentions something about clean and lube....