I assume there are materials from the public policy initiative that could be a starting point, and maybe an ambassador or two that wants to help (but not required).
Richard (User:Pharos) and David Goodman (User:DGG) developed a library workshop which can be found at http://en.wikipedia.org/wiki/User:Pharos/NWCU and the relevant PPI documents would be: *http://en.wikipedia.org/wiki/File:Campus_Intro_to_Wikipedia_slides.pdf , http://en.wikipedia.org/wiki/File:Campus_Wikipedia_Literacy_slides.pdf , and http://en.wikipedia.org/wiki/File:Campus_Wikipedia_Essentials_slides.pdf .
Also the other pamphlets at http://en.wikipedia.org/wiki/Wikipedia:Ambassadors/Resources are very useful and will offer a good set of information which to base a presentation on,
Alex