Overall Themes
I was wondering if it would be worthwhile dividing the content up according to theme--I have added them in..see what you think. The first theme would be customizing the look and feel of your site and would include: Widgets, plugins, embedding--and maybe custom menus? (I dont mind writing up this part. The second them could be user and data management and include: Moderating comments, User roles, Import Export and Google Analytics. Buddy press could be a category of its own.
The themes might give the session a little more purpose and focus.
I was also wondering about whether categories and tags are necessary. I know I was the one to suggest it but I actually dont see that their is much to go over in this regard. A couple areas we could add instead might be a) custom menus b) Theme options--changing background colour in twenty10 in in Coraline actually changing theme layout--number of columns