I usually run -1 degree of camber in the front. If you are looking straight on at the buggy, the top of the tire will look like it is leaning in towards the buggy. In the rear I use 0 or -1 degree of camber.
I also use 1 degree of toe out in the front. If you are standing above the buggy, looking down at it, the tires will look like they are pointing outwards. The more toe out you dial into your buggy, the better it will turn. However, you will sacrifice straight-line stability and your buggy will be twitchy. If you run toe in you will loose steering, but you buggy will track better.
In the rear I run 3 degrees of toe in. This helps to keep the rear of the car stable and prevents it from swinging around when cornering.
RPM makes tools so you can set these, or you can get a Hudy set-up system (which is what I use) to set your car up.