I beileve the schedule lists the weekend of April 5/6 as the 1st event: Test and Tune / Driver's School.
http://www.renoscca.com/autocrossschedule.html
That would be a great weekend to go to, even if you're not planning on running a full Auitocross season, since there'll be veteran drivers availlable to give tips and ride-alongs (assuming the driver's training day is similar to others I've been to).