I think the acronym you are talking about stands for Human Resource Management. The second part of your question is a little too broad though. If by benefits you mean the health and insurance benefits you get if you are the Human Resource Manager of a cooperation, then it is all dependant on the individual company. If by benefits you mean the positive aspects of the job then it is many things all hinging on your personal likes and dislikes. You get to work with people and help them maximize what they get monetary-wise when they are injured, retired or sick. You get to work with the company to try to ensure that it stays up to date in policy. There are many jobs that a Human Resource Manager does. Your best option is talk to a few people in that field, talk to your counselor at school and talk to a career counselor at the college/university you plan on attending.