Why won't any of my apps open?

What happens when you try? Are they all shaking on the screen?

Try a reset. Press & hold the Power and Home buttons simultaneously, ignoring the red power off slider, until the Apple logo appears. Then release both buttons. This should not affect any content on the iPad, it is similar to rebooting your computer.

If the third party apps will not launch, try downloading another app. Any free app will work.