For first timers I highly recommend BMW CCA (oops, did I mention BMW? My bad). In fact, there's a DE at Auto Club Speedway in Fontana (formerly California Speedway, the same venue that NASCAR uses except we also use the infield road course in addition to 1/3rd of the oval). This Saturday and Sunday (May 30/31). In car instruction all day, with class-room instruction that's invaluable sprinkled through-out the weekend.
There's also a Buttonwillow Raceway event on Friday too if you are crazy enough to do all three days.
High Performance Driving School
BMW Car Club Los Angeles - Club Haus
Feel free to stop by at Auto Club Speedway, I think they'll have 2 parade laps where ANYONE can take their car on the track for 20 minutes (except you MUST follow parade lap rules), or you can catch rides with instructors all day long.