Drag racing classes?

Since you don't have anything yet, use someone's bone stock, auto trans car. Something that won't spin the tires or be fast.
This way, you can concentrate on how to race, and not be worried about a hyper car.
Just bracket race, you'll be AMAZED at how much you'll learn. Then you'll realize a slow car is the way to start. I'm 50, and I'm still learning how many ways there are to lose!