I never realized just how much I actually didn’t know about Second Life until I watched Torley Linden’s Second Life Tutorials. Not only are they crystal clear in direction, but Torley keeps them entertaining and upbeat as well.
If you’re totally new, start on Volume 1 – “What is a Prim?” Even if you’re an advanced user, I can guarantee you’ll learn things you didn’t know by scrolling through the list of tutorials here: http://wiki.secondlife.com/wiki/Video_Tutorials
Here are just two samples…
[youtube = http://youtube.com/watch?v=8tlcXwR-A2s]
[youtube = http://youtube.com/watch?v=IvDPvE4D4Dg]