The Community College Consortium for OER (CCCOER) provide webinar series that are free and open to anyone. All webinars are recorded.
The Virtual Learning Community (VLC) offers live and on-demand training. They are currently offering introductory OER and openNCCC sessions. You will have to create a VLC account in order to register for sessions.
For in-depth training in OER or Creative Commons, here are a few suggestions for where to begin your search.