The ITS subject n resit things

Today,I sit the Information Technology& Systems this subject.It makes me feel so headache when see it.Many friends also said that they don't know how to do.Then,I just knew that the resit price for one subject had raise from RM80 to RM100.I really need to study hard,I cannot play again.I must in study mood and exam mood.I must know how to manage my time effectively and efficiently.I just don't want to resit again.It's expensive and waste time.Then,need to spend time on them again.