IF you are talking about the F11 Top coat and others like it they are not any good. Stick to quality brands like CarPro, Meguiars, Mothers, Optimum etc. If you want to be overwhelmed with auto detailing products go to Autogeek.net. That is a professional detailers supply. If you want to read about all the products in a serious forum about detailing go to Autopia.org
Ceramic coatings are the way to go now but they are difficult to a novice because of the prep work. Go on you tube and there are thousands of videos on detailing. IF you have a specific question post it up and Ill try to answer what I can.