scca?
SCCA has a "Race School" every so often on a weekend.
Essentially, you show up with a prepared car, do the school and get regional certification.
Although I'm regionally licensed by the SCCA to race (did so by attending Skip Barber),
I haven't been too active in it, as NASA is very popular down here and runs an HPDE schedule at the local tracks (which suits my needs, as I just lap in a street car).
If you wish to race in the SCCA; join, read the rule book and pick a category which you wish to race in. Once you have a prepared vehicle (or while you're preparing your vehicle), attend their race school in your car (or in a rental track car).
Best thing to do is pick up the phone and call- 'em and describe what you want to do:
http://www.scca.org/

