Slideshare has numerous slide shows on E-learning that can be informative, fun, and fast. Please link to this slideshow, the search "e-learning, e learning, elearning" etc. You will be amazed at how many slide shows there are on this site. Granted, a lot of the slides may need further explanation, there is still quite a lot of useful conent.
http://www.slideshare.net/markchilds/introduction-to-elearning-2008
