Scenes, skins, wallpapers & lock screens?

[6sigma]

On my unrooted (scared) EVO 3D, I go to settings--personalize and I see scenes, skin, wallpaper & lock screen.

Sometimes when I change one of those, I lose all my icons until I go back to this black paisley-looking background I have.

Can someone tell me where I can find a tutorial about this stuff so that I can personalize my EVO 3D more?

Thanks.