I've been using an iPad since they first came out, and I knew that there were many useful features that I'm not taking advantage of. But I'm now remedying that, thanks to a free tutorial available in the Mac App Store called SCOTutor and put out by ScreenCastsOnline. Unfortunately, it's only available for Macs. The app is a video tutorial showing all facets of the iPad. It has 24 chapters, such that you can quickly jump ahead to any chapter or subsection of a chapter. I immediately went to the chapter on using the home button and using gestures.