To begin with, you need to learn and understand the fundamentals before getting into the major concepts. Once you have registered everything you need to know in your mind, you can move on to reviewing concepts that have not been taught in depth during the class. Although, while doing this, an advice would be to not read the textbook like you would with a novel. Furthermore, you can also look at the exams you have taken up and learn from the mistakes you’ve made to identify your weaknesses and strengths. Spend less time on reviewing topics that you’re already familiar with and that has been taught in depth during class. Finally, take up practice tests like you would take up an actual exam in addition to answering end-of-chapter questions.