To correct Slim Slang, permission is REQUIRED to enter Class C and Class B airspace.
The name So Cal stands for Southern California Tracon, it got that name when the FAA consolidated several Radar Approach Control Facilities under one roof.
I hope you enjoy your flying vacation. If you need any help just contact the nearest Air Traffic Control Tower or Radar Facility and ask for the NATCA Local President. Who knows they might even buy you dinner.
Mike
NATCA Local FWA