Open your hood, locate the back of your headlight housing, and you will see a little grey cylinder in the middle of the housing. All you have to do is unturn that thing a quarter turn, and it will pull right out. Your headlight bulb will be sittin right in the middle of it; pull it out, and replace with the new ones (ive always been told not to touch the new bulb with your fingers, use a glove or something.) Put the plug back in and give her another quarter turn, and repeat with the other side.
*When i say unturn, i mean twist the cylinder like if you were going to open something.
May sound confusing, but you will see when you go out and look at your car that it's not very difficult. Just twist, pull out, replace.