The regular readers know that I make a habit of posting powerpoints before a talk. I find it saves participants from copious note-taking. That makes for a more engaged room.
[slideshare id=22973450&style=border:1px solid #CCC;border-width:1px 1px 0;margin-bottom:5px&sc=no]
In the presentation I mention several resources. They follow:
London School of Economics Twitter Primer (in my opinion, the best one out there)
Tweet Aggregators include Storify, Chirpstory, Archivist
Some accounts, both individual and organizations, that I think get it exactly right:
Woodson Institute