The biggest problem with alcohol is dehydration. Drink a couple glasses of water before drinking. Drink a glass of water every time you urinate. This will help keep the body hydrated. Don't beer bong. Pace yourself. Last of all try and stay away from the cheap stuff. There is a beer site that can help you find a better quality beer that tastes a hell of a lot better.
www. theBeerGuys.com.
This should help. Like others say, build up a tolerance. Alcohol absorbs through the skin so as soon as it hits your mouth. Slow to one every hour and a half and follow the dehydration rules and you should be okay.