Quick tips from experience:
- Always use a clean applicator pad and a buffing towel, not doing so will result in very tiny swirl marks on your car.
- Also before you wax your car, I would suggest a "clay" which is basically a surface smoothener.
- "Claying" your car removes all contaminants from the cars paint and will give you a smooth surface to apply your wax.
- Before you start waxing your car, make sure it is completely dry. You do not want water running through your wax whilst applying.
I've waxed a few cars before so all of the above info was from my personal experience. The brand I use is Turtle wax and if I'm feeling rich I'd go meguliars.
Anyway, a few comparison pics of my Dad's car with wax.
If there is enough interest, I'll write up a DIY on how to detail your car :)
EDIT: To answer a few questions about will a wax remove a layer of paint? No, wax will merely form an EXTRA layer of shine over your existing paint. It isn't a polish.
Also, in the 3rd "before" picture, you can see a scratch on top of the side molding and its disappeared in the "after" picture.
Simple reason? The car was waxed regularly for every 3 months after delivery, and on a recent "off-road" trip I managed to put a scratch on just the wax layer and maybe on the paint, but it was covered up after the wax and is now looking fresh again.