Also, you should try to figure out your car class. Not strictly necessary, but it will help eliminate any confusion when you're at the track. You can find pdf's of the rules here (ST rules will help you figure out what class you're in).The Driver......
Must be 18 years of age, and possess a valid driver's license
Clothing for the day: long sleeve shirt, long pants, no open toe shoes. (Full race equipped driver's suit recommended)
Helmet: must meet Snell M95 or SA95 certifications. (Closed faced recommended)
Mechanically sound: no loose body parts, no leaks, battery securely strapped down
Working seatbelts: seatbelts required for driver and passenger. (Five pt. harness recommended)
Interior: all items not bolted down will need to be removed. Good practice is to remove all mats, unnecessary tools and supplies before coming to the track.
Floor Jack: shop style and a set of jack stands
Tape: headlights will need to be covered. Numbers will be required on both sides of door.
Tarp: to protect items from rain, sun and sand
Food: though all tracks have a snack bar, you may opt for a quick bite between runs.