Avoid scheduling long blocks of time for studying. Try to arrange several short study sessions throughout the day. Make use of study resources on campus. Get to know your professors and advisors. Find at least one or two students in each class to study with.
Studies show that students who study with someone routinely receive better grades.
Teaching a concept or new idea to someone else is a sure way for you to understand it. Studying in a group or with a partner can sometimes become too social. It is important to stay focused. Study the hardest subject first. Work on your hardest subjects at a time when you are fresh.