The owner's manual will show you where the hood release lever is inside the car.
Pull this lever to open the hood latch.
Go to the front of the car and raise the hood an inch or two, locate the yellow lever
and raise to release the hood safety catch. You can now see a black, ribbed box to your left up close to the front of the engine compartment. There are two plastic tabs sticking up on the right side of it. push them in (to the left) to get them to unsnap, releasing the top of the air filter cover. Lift out the air filter, and replace with one that looks just like it. Place the cover back on the box, and snap down.
Not worth $40 for 1/2 an hour's work at flat rate, huh?