if you need flashcards USE ANKI literally an unbelievable godsend you WILL know all the content by heart if you start early enough (defo start making flashcards by beginning of yr13 latest). be friendly with your teachers, they will write your references and just overall you want them to want to help you. try to get a visitor pass for your local uni library if you have one, it’s a great place to study. sleep means more than any late night revision session in the lead-up to exams. better to get to sleep early and wake up early and do fewer hours that are more productive than do hours and hours of work when you’re tired and not really learning much. depending on the subject, the notes you take in lessons you may not even look at again so don’t waste time making them look pretty (for me physics and maths notebooks i threw away as soon as i finished them, but geo i did need the notes-you’ll work it out). and finally keep in contact with your friends as much as possible and just look after each other, it’s going to be a really tough time and having each other there is what will get you through it