which polishing pads for which step

Hello, please give me a quick help. Wants to buy me for an 08/15-excent polishing pads. About the Sufu I tried to get a rough overview, but unfortunately unsuccessful. 1. Is it auto-elevant which pads you need? One often left over hard and just not so hard varnishes. If then it would be for Audi TT (uni white), VW Golf (black metallic), Opel Corsa (black), Opel Astra (silver mettalic). 2. There are various “patterns” (lines, rhombuses, circles, groped etc.) Where is d 3. For which step do you take which pad? Same pad for “finish” and “cratzerreperatur”? 4. What hardness is needed when and for which varnish? 5. Did I forget what?