Download the Mac Basics Keynote presentation. 

This keynote contains some of the basic features and functions to be familiar with when starting out with either Apple's Lion (v 10.7) and/or Mountain Lion (v10.8) operating system.  You must have the Keynote applicaiton to be able to view this presentation.

 Click here to download the Keynote

This file is zipped, so you must unzip the file (by simply double clicking on it).  When it is unzipped, you can double click on it to open in Keynote.