Echo most of the comments here. Go to the track with an organized group during a DE and get an instructor. Don't feel pressured to push it and don't go 100%. Take your time to learn the dynamics of the car, proper driving, and remember that spirited driving isn't all about top speed.
Also remember, having the ability to slow down/stop quicker is more important than being able to speed up faster. At the very minimum, change your fluid and pads before the event. Have fun and be safe.