Make textbook notes BEFORE the lesson - and then annotate in the lesson with extra information.
2. Use practice questions to help revise - after attempting the questions, commit the mark scheme to memory.
3. Continue going over key concepts to make revising the whole course easier when it comes to mocks and final exams.
4. When you're making your notes before the lesson, write down any questions you have about the topic so that you're ready to fire them off to your teacher in the lesson.
"Physics and maths tutor" - ignore the notes because they aren't detailed enough, but definitely use the practice questions - https://www.physicsandmathstutor.com/
"Your textbook" - everything you need to know from the specification will be in your textbook, there are also end of unit questions that sometimes teachers won't use, so they're useful for your own revision - ask your teachers for the mark schemes
"OCR Past Papers" -ONLY use these just before your big mocks, or your big final exams because there are only a few online and you don't want to use them up too early - https://www.ocr.org.uk/qualifications/as-and-a-level/biology-a-h020-h420-from-2015/assessment/
"Quizlet" - for definitions of keywords, or the mark scheme to common questions of a topic - https://quizlet.com/en-gb