what is best way clean vinyl records if they need to be cleaned?

Mild dish soap and water on a clean sponge - nothing abrasive. Wipe in the direction of the grooves. You don't need to wet the label, you just want to get the dirt and grease out of the grooves. Be sure to rinse it well. You can dry the platter with a soft dish towel, but be sure to let it air dry for a while before you play it. The towel won't get to the bottom of the grooves.