Attended another great presentation put on by the San Diego PHP User Group (which I am now a co-organizer of) around a workflow built off Git called Gitflow, presented by John Congdon (@johncongdon). Unfortunately the slides, as good as they are, don't capture all the great discussion and examples that were sparked up from the presentation but its a good start.
As I mentioned, I've taken a more active role is the SDPHP Group so if you have any question feel free to ping me. You can also keep tabs on the groups in the normal spots:
Facebook: San Diego PHP