AOA..
i think for scoring good grades its very important to study regularly especially in semester system.. Atleast read the lectures and if u have time den try to do the relevant question...
Its an Easy way to get the good grade...
Just Concentrate on your study and understand the concepts in your own daily life scenario in your own language.. Remember the important points (underlined) everytime when you are on the rest...
And Last but not least Feel Confident Yourself at exams..
Remember, reading is not studying. Some people assume reading a book over and over helps you to remember things, taking notes and writing bullet points is much more effective. If possible, make flash cards!