I have been sending students to adobe.com to use the Adobe TV videos for Elements. They have always been excellent beginner tutorials. For some reason I can still get to them for Elements 11 and Elements 9 but there is only a short list of tutorials for 10.
The old site for elements 10 is no longer available. This is what I get: http://tv.adobe.com/show/learn-photoshop-elements-10/
Where have they gone?
I'm not familiar with a wider library of PSE10 videos. All of the PSE9 videos would still apply to PSE10, the list in the PSE10 link is videos for features new to version 10.