"I just returned a few days ago from a great week in Cincinnati, reading AP Human Geography exams with 400 colleagues from all over the country. In our conversations during the reading, I've come across a number of these folks, many of them high school teachers, who are interested in using Twitter but have no idea where to start.
What I'm hoping to do in the next few entries is give a beginner's guide to using Twitter, specifically geared toward folk who are completely lost at how to begin. I'll also be working toward some 'best practices' once the basics are out of the way."
See this 'ultimate Twitter Guide'-- http://blog.grabinbox.com/2012/04/24/the-ultimate-twitter-guide/
Need a few ideas of who to follow? Try these: https://twitter.com/#!/APHumanGeog/geog-400-ideas/members
If you are unconvinced that you should get on twitter (#aphg), see: http://www.creativeeducation.co.uk/blog/index.php/2011/09/10-reasons-to-tweet/