I wanna know how camber affects grip because i want to find a good compromise in braking and cornering as well as tire life and laptime. any help? its for the XRG by the way. answer if you can please. Dont worry about being wrong. Everyone is at one point of his life.

There you go,some reading material on this topic:
http://en.lfsmanual.net/wiki/Basic_Setup_Guide#Camber
http://en.lfsmanual.net/wiki/Advanced_Setup_Guide#Camber_Adjust
I think links are quite selfexplaining
Feel free to get familiar also with other setup features.

The best tip I ever found for camber is to adjust it until the inner and middle sections of the tyre heat evenly - this is then the best compromise between the varying camber requirements of all corners on the lap.