Just register early once it opens and you should get a spot. Bring chairs, water, sunscreen, and a couple of umbrellas or a popup but make sure it's secured/weighted. There is a bit of shade but not much. Lunch is generally onsite for 10 bucks, or there are places to get food nearby during downtime.
Car classing - https://cdn.connectsites.net/user_files/scca/downloads/000/060/877/2022_Solo_Rule_Bookv8.pdf?1661354272
We have loaner helmets, and people assigned to ride along and help navigate the course. Leave expectations at home, speed will come in time, have fun, and learn!