A couple of words of advice:
Get there at the buttcrack of dawn, be one of the first ones there. That's when the truly experienced guys show up. Get ready for tech (all of the crap out of the trunk, battery tight, floormats out, trunk and hood open) and search out for one of these guys: a good hint is to find somebody that trailered a car in. Explain to them that you're a noob, and would like to do a coursewalk with them. They might want to walk solo first, but they *will* help you out. You should do no less than four before the novice walkthrough so that you have a leg up on them.
Questions to ask on the coursewalk: What are the key cones? Where should I be looking [through this feature]? Where should my braking zone be? Is this an increasing or decreasing or constant slalom?
When walking, be sure to pace out cones so that you know the answer to the last question.
DON'T BE AFRAID TO ASK QUESTIONS, EVEN IF YOU THINK THAT THEY'RE DUMB ONES!!!
Also, be early for checking in for worker assignments, and ask to be paired with an experienced guy so he can explain how to work course with you and this will also afford you the opportunity to see how others are driving the course.
Additionally, make sure that for your first two runs that you have one of these guys (ideally the courseworker guy or coursewalker guy that you met earlier that you hopefully have some rapport with) ride along with you. And don't be afraid to ask to ride along either.
You'll have a blast.
