DrupalCamp LA is an unconference-style Drupal training, founded in the style of BarCamp. While there are some differences (DrupalCamp does more pre-planning on the sessions), they have the common goal of bringing smart people together in an environment that is accessible to everyone.
Since this is a free+cheap event and on a weekend, we also get to welcome folks who can't usually take the time or money to go to commercial conferences - so it's a lot of fun with fresh faces who have all come here with something to share and a desire to learn.
Since this is a free event and entirely volunteer run (and no, this is not our day job), we also expect active participation from everyone when it comes to running the conference. This is as simple as picking up after yourself or actively fixing something if you see it's broken, but please feel welcome to take an active role in making this a great event. We set the stage, but all of you make this happen!
This event is organised by the Drupal Community: http://2012.drupalcampla.com/