There are a number of tutorials for the Mac online. There are ones at Lynda.com, at apple and more. This one I came across is from Carleton College.
They are pretty basic, but the can help some switchers.
Video Topics include:
* Introduction to the Dock
* Moving and Hiding the Dock
* Dock Size and Magnification
* Adding and Removing Items from the Dock
* System Preferences and Force Quitting Applications
* Finder Menus and Preferences
* Windows, Help and International Keyboard
* Mounting Network drives
* The OS X Window
You can see the all here.
