Welcome. If you go to the how to section on the store page there are videos on how to do most things, that's a good place to start.
As far as best products to use...get ready for about 20 different opinions. I usually recommend new people keep it simple at first. Get one compound. I recommend Menzerna FG400 it's a very versatile product and paired with the proper pad should do about anything you need it to. It's also a very nice finishing compound. To refine the paint a little more and get more gloss I would recommend one polish, Ootimum HyperPolish. It's a very versatile polish. The amount of cut it gives you depends on what pad you use. On almost any paint if you put it on a finishing pad it will give you as much gloss as most finishing polishes.
That's a good place to start, as you learn more and get practice you will probably buy different compounds and polishes.
What kind of machine do you have, and do you have pads already??