Apple recently added a new section to their website called “Find Out How”.  This section provides you with 33 short tutorial videos detailing how to use some of the great features packed into Leopard.

You can watch the videos online or you can download them to iTunes.  I assume you can put them on your iphone or ipod if you wanted to, but I havent tried this.  The videos include:

OS X
Anatomy of a  Mac
Move to Mac
Windows on a Mac

Photos
Creating a photo Book
Creating a slideshow
Sharing by Email
Creating a Calendar
Creating a web gallery
Creating a card

And more for Web, Music, and Documents