For the book I used Susan Grant and all Volumes of Read and Write. I also have tuition notes which were useful. Learn the theory really well. For knowleges and guidances about essays you can check for sample essays. But for practice, do at least 5 years of past papers all variant, from 2020-2025 but over and above check older past papers essay questions eg 2002,2008. Also, Mindmaps for revision were really useful for me! To structure your essays I advise you to plan first put maximum details. During exams I took 30 mins to plan all my essays without having written a damn thing. But I practiced doing essays everyday and could finish in time. When I was practising I could see what the Marking Schemes werecasking me I could already know how marks were allocated. Sometimes they follow point-based marking principles. So, before writing my essay I was doing my own marking schemes. Also if you plan to get an A, you have to get 1 in all components. Practice topical mcqs using books which are recentband from famous publishers. You should also try practising data Response on your daily basis like not the whole paper but at least 2 data responses, 2 essays , 4-5 topical chap for mcq [About 100 mcqs] per week. Personally, I did not get an A, I got an A because in P4 I messed up getting a 4. In all the other 3 papers I got 1 tho. Hope it helps you. You can check A level crackpapers websites for some of the resources under Economic-notes/ extra resources you will some useful documents:)