Learning how you, personally, learn is one of the keys to success on a study plan. If you learn from writing things repeatedly, do so. If you are more a visual learner, write important things for remembering in different colors. If you do not cram well, then look over new concepts every day for 15-20 minutes, jotting down any questions about these concepts.
What appears unorganized to some is not that way for others. The general advice given to you in above posts and the enumerated steps of post #6 are all workable. The key is to establish a pattern of learning for you yourself.