If you’ve ever wanted to save what you are seeing on your iPad screen, it’s really simple. Just briefly click on both the power button and the “Home” button at the same time. You’ll hear a click, and the screenshot will be saved with your other photos. You can then send it to your Mac or PC computer by emailing it to yourself, or you can email it to anyone else too.
If you’d like a more detailed explanation along with step-by-step photos, this web site does a nice job of explaining it.