Whether in JC or O-level or in IP you have taken physics, you should do your best to learn this critical yet amazing subject. To score excellent, attend all the classes in your college or school. At the same time, think about enrolling in a premium physics tuition center.
Do follow the classes and study the notes provided by both your class teachers as well as your tuition teacher. At times, go for a group discussion with close friends and see how you and they have learned. Also, enroll for online video lessons that provide great insight in physics as well as other subjects.