1. Attend all the lectures and tutorials. It has been observed that a major reason for getting a poor grade is due to not attending lectures and tutorials.
2. Solve as many problems as you can. Do the exercises that have been left to you during lectures and tutorials etc. Undoubtedly solving more and more problems not only enhance your problem solving skill and it will help you to develop strong intuition in the subject as well.
3. Communicate with the instructors/tutors for clearing doubts, difficulties, questions or to discuss further on some topics. If the need be and the students are interested, additional discussion sessions also can be arranged. Apart from that, you must engage yourself in peer discussions.
4. You should work hard and strive to learn the subject. Focus must be on understanding the concepts; put your all efforts to follow every detail. Study on a REGULAR basis. There is a trend among many students not to study regularly but only before the examinations. It may not result in a good performance in the examinations, as a good understanding of the relevant concepts might be necessary to solve the questions that will be asked in the examinations. So unless you develop that by putting constant efforts, solving problems etc., it may be difficult to make much progress during the examination.