Relevant Code Titles:
CA Probate Code; CA Civil Code; CA Health and Safety Code; Welfare and Institutions Code (from CA Legislative Information)
Annotated Codes on Lexis and Westlaw (current text of CA Code with Case Annotations and Notes)
Search Individual Code Titles on Westlaw
Search Individual Code Titles on Lexis
CA Legislative Counsel provides free internet access to California Bills:
California Bills (1993- 2016)
California Bills (1999-current)
Relevant Regulations:
California Code of Regulations -- Westlaw | Lexis | Internet
Title 17 Public Health
Title 22 Social Security
Title 28 Managed HealthCare
California Municipal Codes:
Lexis -- California Municipal Codes (search the muni-codes published by Lexis)
Institute for Government Studies - California Local Codes and Charters (Links to muni-code websites for all cities, counties and town in California)