Employment Development Department http://www.edd.ca.gov/Payroll_Taxes
Resource for requirements for filing of California State payroll taxes.
Extensive publications, general and industry specific downloadable in pdf format.
The following are organizations that are gear towards education and certification of bookkeepers.
National Association of Certified Public Bookkeepers (NACPB) http://www.certifiedpublicbookkeeper.org/
American Institute of Professional Bookkeepers (AIPB) AIPB.org
International Association of Bookkeepers (IAB) http://www.iab.org.uk