Not exactly 'rocket science', common sense goes a long way!
Plenty of websites for tips and tricks, my fav is 'Detailed Image'.
3M has some excellent articles/videos on boat detailing. That would be my first go to.
If you have a brand new boat or if the finish is still glossy, the 3M finesse polish using a random orbiter will be the first step. The second step will be the sealer or wax. 3M make pretty good wax.
https://www.3m.com/3M/en_US/company-...94857497&rt=r3
Personally I use Duragloss products. Available at Robbins Auto Parts on Union Ave in Laconia. The sealant lasts a good year, easy on and off. I use the quick detailer between waxing after a wash or rinse. Keeps the boat looking like it was just wax!