The best way I've found is....
Soak in a hot tub...I use just regular soap as I've found that any type of shaving cream irritates me...shave in the direction of hair growth, not against it...use a new blade, I usually get a couple of shaves out of one blade then I change it. I have no preference on what type of razor as long as it's not a disposable one....after drying off apply Bump Patrol, it's an after shave cream that can be found in the black mens shaving section. It will stop any type of shaving bump from coming up. I no longer use this as I've been shaving for years now so my skin has adapted and I rarely have problems with any type of rash. You can also use Dove deodorant to help with the itching that occurs when the hair starts growing back. Shaving on a regular basis also helps, I usually shave every other day.
Here are some links where this subject has been discussed in the past, hope this helps.
Shaving Rash Ouch! Experience with Veet bladeless shaver http://www.swingersboard.com/forums/...hlight=shaving
Teresa