Very easy. First read the manual. There are 4 tabs on the top of the grill. Depress those down. This will loosen the top part of the grill. Pull the grill straight out after the top part us loose. You will need to apply a decent amount of force to pull it out. Don't worry! No damage will be caused. After the grill is out you will need to pull tabs that hold the headlights in. Use a wrench to do that. Once that tabs are up, remove the entire headlight assembly. Unplug the headlight. Remove the protective cap from the back. Unscrew the bulb and replace with the new one. Repeat for the other headlight, then reverse the steps to put everything back together.
This is the first time I have replaced a headlight on a car. I was very disappointed with the stock halogens. If I can do it, anyone can.