I've used Meguiars' polishes for years - bloody expensive stuff, but it's the best.
One bottle should last for years.
I often use it on car models. I wait for several weeks for the paint to dry, then take off the dust specks and the worst of the orange peel with 2000 wet and dry (used wet), wait another week for the paint to dry again, then use the Yellow Wax to rub out the paint and get a wet look shine.
The finer sanding pads and sanding cloths would make my life easier, but I've just nevere gotten around to getting them.............
Future can be a real pain - I've found that it works well if you spray a REALLY fine mist coat, let it dry for 10 minutes, then repeat this process at least once more. Let it dry, then try a quick wet coat. The first wet coat will probably dry a little flat, but the next wet coat should dry glossy.
Always allow 10-15 minutes drying time between coats.
Take a scrap car body and practice - then practice again. And then again. Then you'll figure it out.
Future comes off very easily using an ammonia based window cleaning product like Windex. Or just mix a little ammonia in some water. The Future should come right off without harming the paint.
Cheers,
LeeTree