We have published 24 Sitefinity videos on our website. The videos are divided in eight groups, demonstrating various Sitefinity features and concepts such as "Customizing Sitefinity", "Sitefinity system services", etc.
While the readership of this blog may be well acquainted with most of the topics covered in videos, I think you may find them very useful as a sales and marketing aid when pitching to your clients, because though we cover some of the more advanced topics, the overall tone is very straightforward and jargon-free.
You can find the videos on this page : http://www.sitefinity.com/support/videos.aspx
I hope you’ll find them helpful. If you think we’ve missed something or need to improve some parts, please let us know.