Hi mate first of all decontamination of the paintwork is crucial. Tar removal, Iron removal and claying. Get this all done first so you have a clean canvas. Pads and polish combo depends on paint and car. Scholl products get good rating for VAG paint so does menzerna. If it’s your first time best to go with medium combo. Have a look at polishedbliss or in2detailing. I am sure resident experts will come along and advice you. But best to state what machine and car etc you are working on. All the best.