Welcome. Too many things to hit them all here, but it's a good local autox scene, and ride alongs are ok in pretty much all the clubs. ER uses SCCA classing and runs a similar format, just more runs typically. NTAXS and BMW use a few loose class groups and are very laid back.
I run a HS Mini in the local X class, and I'd be happy to let you codeine that event if you can stand to drive a car that barely outruns the kids on razor scooters.
Mike