Here's the follow-up to Conversation: Introducing role-playing, in which Ken Oswald presents an intensive and interactive summary of the hobby as activity. It's hefty, at just under three hours, but full of titles (not summarized here in tags yet) and open doors for further discussion.
I'd like to see some comments going through those doors!
It's also a great portrait of general concepts and assumptions throughout the members of the audience, since they have clearly arrived with a good attitude and strong desire to learn. Ken is very, very good at managing as well as enjoying the role of instructor, and I suggest taking notes on how he does it.