Under BDSM health Q&A there is a subject titled Shaved Pussy.

This is actually a good thread because it covers alot of the ways some of us prefer to shave. Most of the main points made are pretty solid through out, the basic difference come in through the products that we use.

Mostly: use a new razor with multiple blades, find a soap or product that will make shaving easier for you, exfoliate, soak the hair in warm water before hand, and then afterwards make sure you apply a product to prevent an irritating rash from cropping up. Several are suggested in the link so it'll depend on your preferences from there.
Good luck.