In the free documents on enotes, there are at least two powerpoints which you can look in your browser that teach methods of studying lessons.
This is one of the powerpoints that teach a method of studying and learning: http://www.enotes.com/documents/writing-from-reading-annotating-83503.
Both of these powerpoints were created for freshmen and sophomore composition classes. They teach effective methods to helping the student to recall information by active reading and annotating what he is reading.
Learning to retain information is an important aspect of becoming a great student. There are rules that should be followed. For example, always study the most difficult material first in your study time. If it is hard, then you want your mind at its freshest. Conversely, save the easy things for last because you already know what you are doing.
Good study habits have to be learned because they are not necessarily natural for everyone.
Watch those and follow the guidance of these free powerpoints.