Looking for tasting group (Napa/Sonoma)

Hi there, 

I'm curious if there are any tasting groups in the Sonoma County area? I'm new to the area and looking to find a group (or start a group) for tasting. I've only taken my intro test, but am looking to work towards certified. Any info would be amazing. my email is: Matthewcarruthers@gmail.com.

Thanks!