The DAS polisher is a good one for beginners. You need to read up on machine polishing but this should be good for starting:
clickyIf you're gonna get into detailing, which you seem to be, you need to join up on Detailing World and have a browse. Look through recent threads and posts, especially the help and Guides sections.
You can essentially use any pad with any polish to provide varying cuts of polish but have a read on how to do it properly. Both items in the link are polishes - one's more aggressive and one's more for finishing, I think.
You would follow up with a glaze say Lime Prime Lite, and then a sealant such as FK1000P, Jetseal 109 or any of the other sealants. Finally finish with a wax of your choice. Remember to prep the surface first which means:
- prewash +/- allpurpose cleaner or traffic film remover
- two bucket method wash. Prior to polishing, I do this twice.
- clay the car thoroughly
- dry and then tape up the car. Polish can get on to black plastic and be difficult to remove. If you don't tape up where there are edges, you can drag dirt out.