I came home today to find that my first generation ipad will not let me open any programs not even the setting will not let me do anything
Connect it to your iTunes and back it up and then restore it.
It might just be glitching, have you tried a soft reset? press and hold the lock button, turn off, wait a minute and start her up again. :: mike
If mikelinus's suggestion doesn't work, try a reboot. Hold down the home button and the sleep button until you see the Apple logo. If you see the screen that tells you to swipe to turn off, ignore it just keep holding the two buttons until you see the Apple logo, then let it boot.