New to racing, with an MGB

Hi there,

This is my first post, and I was wondering if there is anyone out there who is / was / will be racing an MGB in historics. I have recently bought a 1964 FIA MGB and am starting to get my act together to go racing. Is there a good source of general information (regrading rules for various series, tips etc) that I could tap into? I have been a motorsport fan for over 50 years, but not fro this side of the steering wheel!