Doing exercises and working through examples often helps you highlight where an additional effort needs to be made. Revise your notes constantly as new topics often require an understanding of earlier work. Have a weekly study plan, also. It is important to revise your work constantly and to plan for submission of reports and assignments which may involve several days work. Similarly you should also, in due course, be working through past exam papers to give you insight into the relevant standard of work to help you to revise for the exam.
Study is a disciplined activity which is hard work, but it can be enjoyable.
The amount of time you need to spend on study will vary from person to person. An average student aiming for a pass degree should work a forty hour week, which includes contact hours and private study. If you are struggling to develop good study habits, help is available through group counselling sessions offered by the university's counselling service. As part of your course, you will be required to take notes in a number of settings - lectures, tutorials, seminars, and for all your subjects. Once again there are a number of factors that you should be aware of.