Many people that I speak with on a regular basis are not fully aware of all the features that their PC or Mac have to offer. While teaching classes at Beaufort County Community College for the Continuing Education Department I found that a great source learning and to be used as a reference tool is the Teach Yourself Visually books.
For Windows Vista users, please take a look at the following link on Amazon.com: http://www.amazon.com/Teach-Yourself-VISUALLY-Windows-Vista/dp/0470045736/ref=sr_1_1?ie=UTF8&s=books&qid=1252639580&sr=8-1
For Mac Users, please take a look at the following link on Amazon.com: http://www.amazon.com/Teach-Yourself-VISUALLY-Leopard-Tech/dp/0470101679/ref=sr_1_7?ie=UTF8&s=books&qid=1252639806&sr=1-7