Sid as Freddie pointed out it is pretty basic, common sense stuff. Very similar in requirements to autocross in SCCA. I don't know if you can even find a Snell 2000 helmet any more. If you can and are going to buy one, get a Snell 2005. GForce has good prices on these helmets. While you are at it... might as well get a helmet that works with some sort of Hans type device. The prices on these have come way, way down and if you decide you really like the track, you willl want to invest in one. Just be sure to try them on first! A fire suit is not required... after all, this is a school! Do however wear long sleeve shirt and pants and be sure they have no
synthetic content. All cotton works well. Synthetics in a fire have a nasty habit of melting to the skin. Of course if you have a suit or feal like springing for one, never a bad idea. Driving shoes are a really nice purchase. Change your brake fluid just before you come. The guy in front of you will thank you! Wilwood 570 is a nice performance fluid, widely available and won't break the bank. Give you car a good once over and make sure nothing is loose. I don't recall 5 or 6 point being a requirement but a 6 point is a VERY good idea, cheap to add on to what you have and a snap to put in. Don't forget to give your belts a serious looking at. While not enforced for the school, racing belts have to be re-certified (read: re-webbed) every two years. I get mine done by the manufacturer for about $100 a set.
Have fun!!! I know you will