From SFBC:

Been an SF Bicycle Coalition member less than a year? New members are invited to join us to learn about SF Bicycle Coalition advocacy, education and community programs that will make SF a model cycling city, and how you can get involved. This is a great opportunity to learn more about your friendly SF bike advocacy organization. Bring your bike up with you! RSVP to Tessa@sfbike.org or (415) 431-2453(BIKE) x301