If the paint is in good condition I would recommend the following process:
1. Wash/dry (bugs, tar, etc)
2. Clay Bar
3. 1-step cleaner wax (meguiars is decent for over the counter)
or
1. wash/dry
2. clay bar
3. show car or new car glaze by meguiars
4. wax
or
1. wash/dry
2. clay bar
3. polish(swirl remover by meguiars)
4. wax
polishing is almost a waste of time when doing by hand since little results if any will be seen. For paint in good condition you will notice more with the hand rubbed glaze(wet look/depth in color). If you want the process to be quick - try using Paint Perfection Glaze, I use more of this thany any other product.
Paint Perfection Glaze
Most the products i use are made by Hi-Temp but for over the counter stick with Mothers & Meguiars -- Turtle Wax stuff sucks
Detailing products // Q/A Tips & Tricks
To make apply/removing wax/polish/glaze invest into a cheap Craftsman orbital buffer, it will cut work time in 1/2, leave no swirls, & better results than by hand.
The best glaze
Hi-Temp - They list all directions for method of use