Bring a bottle of oil and make sure you check and top off before you run and between heats.
Between heats pop your hood and let that heat escape to preserve your hoses and cables.
Since it is your first time all you need is a bottle of oil, painters tape, air gauge, lots of bottled water, and some paper towels to check oil.
Before you go to track check your oil and make sure your tire air is at door jamb limits. Also, hand check all your reservoir caps to make sure nothing is open.
Listen to your instructor and be aware of your brake feel. If your brake pedal fades, feels mushy, or drops to the floor you're done for the day.
Otherwise have fun
