I took it before 1. Main study material: your TEXTBOOK. You don't need any reference material, tbh. But to do more questions (besides the ones on your textbook), you can you use extreme series reference books for Math, Biology, Physics, and Chemistry. And also, you can watch YouTube videos, google, or refer some books on topics you couldn't understand from the textbook. Your limit is the textbook. Don't go beyond it as you'll waste time, but try to grab every concept on it as much as you can. 2. Do past year papers, especially the exams of the two recent years. 3. Focus on on the subjects you are very good at, and try your best to get a decent score on the subjects you struggle with. 4. I don't know about this Grade 9&10 issue. There weren't part of the exam for our batch. But still, I highly recommend you to focus on Grade 11&12 learning materials. And then, just revise Grade 9&10 contents, which will be easy for you once you have mastered the Grade 11&12 contents. This because most of the Grade 11&12 contents are just more detailed and advanced version of the Grade 9&10 topics. 5. Good Luck!