probably average of 3 hours a day for doing my normal stuff ie reading news/forums etc then it could increase depending upon amount of school work which is computer based.
3 hours or more..depends really, some days i just cannot be bothered. Other days my eyes begin to hurt Ice
at least 10 hours a day... cept on weekends, if it's rainy, some time, if it's not, I'm outside away from all technology (Cept maybe my GPS for Geocaching)