Tonya Engst of the legendary TidBITs website has written a 109-page pdf ebook titled Take Control of iPad Basics. It's free, and if you're thinking about getting an iPad or if you have one, you'll want to get this book. Some of the content is, well, very basic, such as how to use the touch screen, but other information was quite useful to me. For example, I had no idea that you could combine gestures to get diacritical markings when typing. And to be honest, I didn't know that you could shake it to Undo. The section on moving files and data between your computer and your iPad is quite helpful, too. Highly recommended.