Greek as others have stated start out in a street class or trophy. You can start in your daily driver, heck I have several cars and still run my daily driver alot. Run as often as you can, nothing beats SEAT TIME! So if you able to run test-n-tune nights and race nights. Get yourself into a routine at the track and stick to it. If you have no experience with drag racing and are just getting into it (even as a spectator) I would recommend one of the Richardson Bracket Racing DVD's. If you've been around Drag Racing for awhile and are just now getting into driving then save your money and dont buy the DVD. Either way SEAT TIME is the best educator. Once you get comfortable racing, when you get to the Water box, you MUST have the Boxer and Sprinter mentality that NO ONE can beat you!
Have fun and be safe
..............Tyster