The topic of CCW in California is so complex and constantly changing that it would take a dedicated forum to even begin to comprehend them.

Luckily, one already exist.

http://calccw.com/

As with any internet forum, you need to take any information with a grain of salt, there is a lot of misinformation from people with good intentions, but who really are just repeating things they've heard from AFOAF (A friend of a friend) who's daughter's boyfriend's room-mate was told by a off duty police officer 5 years ago. Some of it might be generally correct, but some of is completely off base.