Open your hood. Turn your headlights on, so they pop up. Unplug the motors. Turn the lights off. Close your hood.
Replace your lamps. They're held on by the ring around the bulb. 3 or 4 screws.
Turn the lights back on. Plug your motors back in. (You might not need to turn them back on, but I'd hate for you to get "bit" if the headlights drop as soon as they're plugged back in. I forget if that's "a thing". Been a while.)