Yearly Square Dance Festivals
http://www.squaredancefestivals.org/california.htm

Unsure of a call and the steps to use? 
Here's the answer: Square dancing calls
http://www.saddlebrookesquares.com/lessonindex.htm#startcallindex

Calling All Square Dancers - Aug 11, 2011
http://thepress.net/view/full_story/15041648/article-Calling-all-square-dancers 

Northern California Square Dancers' Association
(this site has links to valuable resources, including clothing retailers)
http://www.ncsda.com