Did you know that you can also download and read the free iPad manual in iBooks? I love using that whenever I need to learn a non-obvious kind of feature. It is amazing that such a simple and easy to use device has so many features.
Just so you can laugh, I've owned an iPhone (very similar in basic operation to the iPad), my first Apple product, for a long time. In fact at the time there was no app store, only the few apps that Apple provided. So I opened one of those apps on my new phone and I didn't know how to get out of it. I had to open the little paper instruction sheet that came with it to find out about the home button. Glad I at least figured it out on my own and I didn't have to make an appointment at the Genius Bar, lol!