The Snapguide app has a tremendous collection of guides created and uploaded by users on how to do about anything.
If you have ever wanted to learn how to tear an apple in half, you can teach yourself how to do it on Snapguide. Being a Tech Integration Specialist I did some searching for "techie" stuff and found out out how to use iBook Creator on your iPad. The search feature allows you to find almost anything. If you can't find it YOU can create it and publish it!