No headlights with automatic switch

Last night, I went out to start my car to go out to supper, and the headlights would not come on. I tried turning on the headlight switch and still nothing. The interior lights came on and so did the park lights. This is on a 2002 Buick LeSabre. Would appriciate any information on where to start checking this problem out. I feel pretty good about working on a 49 Dodge or a 57 Ford, but these new cars are out of my line. Thanks for the information.

Start by checking fuses. Then check the bulbs. I once had both bulbs go at once. Do the high-beams work?