Hello , year 13 here . The oxford revise book for AQA is by FAR the best revision resource I have gotten so far. Iv'e had people ask me about it and its so useful to have it out in lessons, especially when learning new topics , as it simplifies everything for you without missing out anything you need to know. Best £20 I've ever spent , it's really really worth it . It has a knowledge section with all the notes , then another section with questions and answers to recap what you have leanrt and then 4-5 pages worth of exam questions for each topic that you can access the answers on their website. It also has notes for all the optional topics such as astro and medical etc AND has all of the practicals you need written up with their appropriate graphs at the back of the book.Definitely worth it !!!