I was thinking about this, was wondering if "ToastMasters" style talks would work (http://www.toastmastersclubs.org/welcome/). I wonder if it would be possible to teach each other Tech stuff and use some of the methods that ToastMasters use. The format used is encouragement and improvements. First someone presents something and then someone else encourages the presenter and offers suggestions for improvement. People learn from each other and encourage each other.