Here are links to sites with information on Bay Area airports:

Oakland Airport

Oakland Airport Web Site:
http://www.flyoakland.com/

Ground Transportation Information:
http://www.flyoakland.com/groundtr.html

San Francisco Airport

SF Airport Web Site:
http://www.airportsintl.com/sfo.html

Ground Transportation Information:
http://www.airportsintl.com/sfo/sfo-general-info.html