Without studying you will get an F and your parents will kill you. The way I found studying easiest was to take notes during class and study those notes. On stuff you don't understand, google it. Focus on main topics when writing notes, because if you write too much you will not remember anything yo. Another way is to make flashcards on Quizlet if you do this, you can download the app and study anytime. quizlet is a great method. The traditional method of reading the chapter or specific pages through and through is also really helpful, but I found other methods better. In the end do whatever you have to that will help you remember and get good grades.