Take a look at these following references:
1: The main page for the California Building Statndards Commission
is one place to look,
2: The Division Of Apprenticeship Standards
is where the exam is "Housed". From this home page, you can download the Applications (in .PDF file format - need Acrobat Reader to view, site has link for free reader), and reference the Assembly Bill (AB931) for the Electrician's Certification Program, along with the FAQs.
3: Bounce around the State Of California Main Page
for more information.
BTW, just for fun, you can check into Title 24, Part 6
Energy Conservation methods and standards.