That's the most comprehensive area schedule you'll find. Classing and stuff is irrelevant unless you're going to get serious into competition. Every club has different classing rules, but there's not a single one of them that will turn you away if you show up with a safe car. All you need to do is figure out how to register, and it's not that hard. Links to the club websites are right there in that same thread. If you're looking for somebody to make it easier than that... you'll probably be waiting a long time.