RSVP on the Bay Area Digital Fabrication Club meetup page: http://www.meetup.com/Bay-Area-Digital-Fabrication-Club/events/180104082/
From their post, "First off, thanks to everyone that made our first meeting great. Very excited about this group, sharing workflows, and talking about fabrication! For our next meeting, same as last time: let's meetup around 6PM for pizza, beer, and mingling. Then around 7 we'll have a short presentation and discussion on Additive vs Subtractive vs Manipulative fabrication; what they are, what the differences are, and how we're all addressing the various challenges they present. I'd also like to swap stories and cool stuff we all saw at Maker Faire, so if you see something there related to Digital Fabrication, come with a story about it."