Several times a year WordPress.com offers its Blogging 101 online course. It is free. It provides a month's worth of exercises that introduce WordPress features and functionality in small lessons. The lessons and exercises are available between course offerings for those who can't wait to get started.
» Blogging 101 - Zero to Hero
Several Meetup Groups that deal with WordPress issues can be found in the San Diego area.
WordCamps are self-organizing User Groups of WordPress site owners and developers. WordCamps are held around the world. Many cities host a WordCamp annually. The most recent WordCamp in San Diego was held in March of 2015. WordCamp Los Angeles will be held in September 2015.
» San Diego WordCamp - Every WordCamp is different. At the risk of sounding cliché, WordCamp San Diego is for EVERYONE! Our Saturday sessions will have 4 tracks with content focused on the following groups: beginners, designers, developers and admins. On Sunday we hope to expand your WordPress knowledge even further by offering specialized boot camps to help you perfect your technical skills and/or business savvy.
» WordCamp Los Angeles - WordCamp Los Angeles is a casual, locally organized conference covering everything related to WordPress. WordCamps happen all around the world, and each camp has a unique flavor based on the local community. Read up on what to expect at WordCamp.