Briefly scanning the interlinks, it appears the permit costs $200-$300 (depending on where one applies), may takes weeks to months to receive, the applicant must specifically list their carry gun(s), could require up to 16 hrs of classroom/ range training, it's a 'conceal carry only' state, and not surprising, there are a host of restrictions on where one can carry, which may vary throughout the state, includes bars and restaurants... and worst of all, it's california....
Here's the 17 pages of rules and application docs
CALIFORNIA DEPARTMENT OF JUSTICE/ BUREAU OF FIREARMS/ STANDARD INITIAL AND RENEWAL APPLICATION FOR LICENSE TO CARRY A WEAPON CAPABLE OF BEING CONCEALEDObviously this is a meaningful victory for some people, but I'll be passing.