Agree with Jamie's advice here, there is no one right answer to that question. Get to a race meeting and ask lots of questions to get a feel for what cars are used and how much they cost, how easy to maintain etc.
Directions to the indoor venue here
http://www.bmrcc.talktalk.net/chadderton.html
Bury club website here.
http://www.bmrcc.talktalk.net/index.html
The next meeting is 21st Feb.
Chris