Just What the Heck is Twitter, Anyway?
Admittedly, the tutorial is aimed more at friend-and-family usage, but there are plenty of ways to put Twitter to work as a productivity tool. Start with 17 Ways You Can Use Twitter: A Guide for Beginners, Marketers, and Business Owners.
Do you use Twitter? Heck, do you "get" Twitter? Hit the Comments and share your thoughts.