The Hungry Minds People's University site has an interesting free course for anyone getting involved in online learning and wanting to develop their skills and confidence.

The Course Description for this short course reads:
"In only a few years, live chat and discussion will be thought of and used in virtually the same way as the phone. Developing the etiquette and mastering the techniques to use these communication technologies effectively may soon be required job skills."

Participation is free (requires simple registration) and its delivered online!