As a newbie the BEST thing you can do is make sure your current car is mechanically sound and go race race race. If you like it, only then drop some money on whatever you deem necessary to go fast(er).
Matthew W. Campbell-- bigMoney Racing --1999 SVT #220 "NT4UA" /O.Z. Crono Evo\'s//Rear Deck Sub/ --1972 Chevrolet C/10 Custom Deluxe--1980 Camaro in fewer pieces-- "If I had invested...in IBM or something like that, I would certainly have been wealthy within a decade. Instead, I bought a Porsche...and got a life" Leon Mandel