Just the bulb on the new ones? pop the hood and find the back of the bulb you need to change. they can be kinda tough to turn, but a 1/4 turn will unlock the bulb and it can then be pulled out. then...
Unlug the light harness, unscrew the plastic nuts, pull out the headlight. Reinstall new headlight, screw the plastic nuts back on and plug the light harness back into the the headlight housing.