I'm taking Biology(AQA), Chemistry(AQA) and Physics(AQA) for AS-level, And i would like to buy a really good revision guide/textbook for all three subjects, before College starts, and also any good ones that are specifically for AQA. Thankyou!
Check out Advanced Physics by Oxford. It's not tailored towards any exam board but it has lots of information and really difficult questions. so if you could do them, then the exams will be a breeze