In the past few months there have been some new live training videos/tutorials, such as basic and advanced usage, and some other ones such as club usage and the likes.
Are these, or will they be available on youtube or some place else? How does one get on a mailing list to be notified of these?
The training files are located on the www.obsidiancontrol.com page. There is also a section for upcoming training.
Here is the link to the page with the videos for your reference.
Hope this helps,