Note that this site is for the current version (PowerPoint 2010). The current version is similar to PowerPoint 2007 and the information at this site is generally applicable to the 2007 version used in the workshop.
Self-study tutorial that covers the basics. Presented by Florida Gulf Coast University.
Series of three blog posts by David Siegel that talk about giving a good presentation. Not much about PowerPoint per se, but it does go into what makes a good slide. For what it's worth, I agree with most of Siegel's "rules."
Wikipedia article about all versions of PowerPoint.
The results of a Google search with the search terms of "using powerpoint effectively." Many links to explore. I think the best of these is the single link below.
Article by Gary Chapman of the LBJ School of Public Affairs at the University of Texas.
Article by Edward Tufte, a guru in presenting information in a clear and understandable manner.
A humorous look at how PowerPoint could totally deflate one of history's greatest speeches.
This page is hosted on my web site jcby.com (home/toc). If you have questions about any of the information on this web site, please e-mail me at: jcb37310@yahoo.com.