Here is a great product. I have been using this for quite a while. It is really easy to use. All you do is to spray the supplied lubricant onto a panel, rub with the clay bar until the contaminent is removed, knead the clay after each panel, remove with a microfiber towel. After you have clayed the whole car you can wax with the supplied wax or one of your own.
Here are a couple of things
If you clay you must wax. The clay removes everything down to the clearcoat.
Knead after each panel to get to a clean piece of clay.
Lubricant must be used so no scratches or swirls are introduced.
Glass and wheels can also be clayed with good results.