[jenmcd]

i'm assuming you want to race scca and yes there is a book and a website-i believe it is scca.org-i'm not familar with your area but i'm guessing there may be a local chapter also that would have classes based off the scca rulebook. my suggestion is to attend races in your area and talk to as many people as possible. you'll be able to see which cars are competitive in what classes and which class you would actually want to race in. the local scca chapter in my area, iscc, has a small magazine they put out that has racing results, general articles and classifieds. you may see if that is available to you as well. i'm assuming you have attended some driving schools-if not-go. that will also allow you to talk to other track nuts and see different cars in action so you can see what is right for you. driving schools are a great way to learn your car and what driving on a track is all about without all of the racing expenses. imho.
jen