Cleaning your iPad should be simple. You do need to keep in mind that this is a touch-screen you are dealing with so care must be taken not to damage the oleophobic coating that makes that possible. A little extra care, especially if you are not using a screen protector, will prolong the life of your screen and iPad.
Apple tells us (in the iPad 2 User Guide): 

To clean iPad, unplug all cables and turn off iPad (press and hold the Sleep/ Wake button, then slide the onscreen slider). Use a soft, slightly damp, lint-free cloth. Avoid getting moisture in openings. [...]

(UPDATE) Yes, you read it RIGHT, CORRECT and completely on the level…. ZAGG is allowing us to EXTEND their Cyber-Monday Sale right through TUESDAY!!!  It seems you bogged down their servers on Monday to the point where they were afraid that maybe you didn’t get to buy your iPad accessories…. BUT I wouldn’t take the [...]

Apps for iPads does not review many accessories. That’s because we insist on trying out each of them, before we endorse them. Seems only right; I tell you what I think because I either like or don’t like a product, period. Our budget is only so big, like yours. One product I really like is [...]