Physics is not a subject for memorization, but for understanding, and curiosity. Physics should be fun, so be sure to ask questions about anything you do not fully understand. You can take a wide variety of courses in your first year, and make your decisions after you've been introduced to the basic ideas. To enter the physics program, you should have taken grade 12 physics, and university preperatory math. You are about to embark on an exciting journey.
Marks are important for entering university, so keep studying, and work hard.
In the meantime, keep thinking about what you are learning. Ask plenty of questions in class, and if you're interested in further details, consider visiting one of the sites listed below, or visit a library. You'll soon find that every answer raises more questions. Opportunities in Physics Physics is an active field of science, with much research taking place, here and around the globe. Physics is a valuable asset to everyone.