Here's a wonderful web site containing loads of technical tutorial videos on
Windows and Linux, as well as a few Citrix and Novell ones too. The quality
is excellent covering dozens of subjects, but they are rather more technical
than many other sites. For example, if you want to know how to interrogate
Windows Active Directory via the command line, then this site is for you.
http://www.techsupportalert.com/content/great-technical-tutorial-videos-urban-penguin.htm
