If you happen to have family members from the San Francisco Bay area, you should know about sfgenealogy.com This extremely useful Website is sponsored in part by the California Genealogical Society and Library. The California Genealogical Society also has a blog.
Here is some of the content added to sfgenealogy.com just in the last two or three days:
29 January: San Francisco: Central Methodist Episcopal Church directory, 1910 by Nancy Pratt-Melton
28 January: Marin County: Kentfield School Graduates, 1913 by Cathy Gowdy
28 January: Marin County: Marin County Grammar School Graduates, 1913 by Cathy Gowdy
28 January: Marin County: St. Raphael’s Grammar School, 1908-11 by Carolyn Schwab
28 January: Marin County: San Rafael High School graduates, 1908-11 by Carolyn Schwab
28 January: Marin County: Dominican College graduates, 1890, 1892, 1895-98, 1910-11 by Carolyn Schwab
The list of recent additions is impressive. Their Research Tools are very interesting and useful, including archaic medical terms, birthday calculators, cost of living calculators, and other links to useful sites.
In doing research on old California families, I have found this site to be very helpful in providing links to original documents and indexes.