Also, just use the basic settings at first. Color, Sharpness, Contrast, Tint, etc. Sometimes they have different names, but these are always in the user menus, easy to get at. And, other than Contrast being too high, they really can't damage your TV no matter what setting you choose. These basic settings are really what Avia and Video Essentials are aimed at.

If you get more interested in really tweaking, there is usually a hidden service menu that has more controls. This service menu is where you could potentially get into trouble and mess up a TV. So that is for pros or those willing to risk it and learn something a little deeper.