Well its a black golf mk5. This will be my first time with the g220 but i have polished/wax by hand before.
Sorry, but what do you mean by struggle?
Get yourself down to the scrappy, buy a bonnet or door for a golf and practice away

Your probably best off starting with a polishing and finishing pad, you can get sample sets of 3M and Menzerna polishes that you can experiment with. Although generally speaking you'd start with a product with least cut, and work up if needed.
There's some excellent, detailed guides on the Detailing World forums.