The question you ask is too involved for a proper answer. You need to go to a car parts store, and get a repair manual for your car. They cost about $16.00 Or, go to a Public Library.
Not too hard....just awkward. Safety first, open the hood and disconnect battery ground strap. Working from the drivers side of the engine compartment, right at the top of the firewall there is a elipticle shaped hump extending from the middle of the car to the right inner fender area. the hump has two intergrated spring clip to hold down the cover CAREFULLY lift the clips enough to raise the cover. there is a thick weatherstripping to seal the hood near the windscreen pull it from either end straight up and until it is totally off. With the compartment cover loosened adjoining it is a another plastic piece held in place with simple slide off clips pull them off and the side cover and then the center cover exposing the motor and the linkage for the wipers. At the motor is a spring clip you just lift and slide off. Now pop off the linkage arm at the motor and swing out of the way. You see an armature attached to the motor shaft pop off the 2/3 "plastic cover with a thin knife blade or thin pointed scribe. Remove center screw and remove the armature assembly consisting of the top piece a thin metal tension clip. You can see the either 3 or 4 nuts that hold the wiper motor in place. Before removing them, reach under and unplug all electrical connections to the motor. Remove the nuts/washers holding the motor and the wiper motor will drop down and out. Do it backwards to install. Boy that was wordy, Huh? Good Luck