Go to carclean.nl and register to the carclean.nl forum.
This is a very good shop with even better service and advice.
I myself am an enthusiast detailer of cars, i have polished plenty car's bij now.
You can wax a car right after it's painted, but only with a carnauba based wax not with a sealant.
After 6-8 weeks you kan polish the car and/or use a sealant.
My tip for you, order at carclean.nl a jar of Poorboys natty's paste wax.
it is cheap and it is a pure carnauba wax without fillers or sealant.
Questions? just ask.
Oh and learn about the two bucket washing method, this keeps your car in showroom condition.