All these Mac tutorials are provided by Apple. I know you need Answers on how to do things and I you will find answers on Mac that you do on the PC.

http://www.apple.com/findouthow/mac/

Switch from PC to Mac 101
http://www.apple.com/support/switch101/

Mac 101 Basics get started with the Mac.
http://www.apple.com/support/mac101/

Macbook for Education (Overview and insights on why Mac for education)
http://www.apple.com/education/teachers-professors/

Creating Podcasts with Garage Band (Video tutorial on how to create a podcast using Garage Band)
http://www.apple.com/ilife/tutorials/#garageband-podcast