hi molly, this is a little late, but...
there are many meditation centers in your area, i used to go to one in SF in Noe Valley, but im sorry i cant remember the name, it was quite a while ago. if i can find the name i will post again. Try searching for buddist meditation centers, there are places in berkeley too i know. The center i went to had a small informal group, about 8 to 10 people would shw up, with a really peaceful leader who lead in some small mantra chanting and it was about 1.5 hours at night.
Also there is a sivananda yoga center i think on fell or lincoln in Sf next to golden gate park that has meditation groups as well as yoga, and they are really wonderful(as well as having an ashram a few hours away for retreat)
it s helpful i think to begin with a group and have some guidance and clear energy....
peace....