abitary warning about spelling
CGP ALL THE WAY.
I recommend the CGP Complete Revision and Pratice books they have a purple and black front .
They contain the Revision Guide Exam Questions Pratice papers
They contain different exam questions from the exam Pratice Workbook. So if you need more exam questions you can buy the exam Pratice Workbook aswell. NOTICE : THE WORKBOOK AND EXAM PRATICE WORKBOOKS ARE 2 DIFFERENT THINGS. I would only recommend the work book for maths.
For maths and science CGP also do an 8-9 targeted exam Pratice Workbooks.
Remember not to just read them make flashcards and take notes ect ect.
Combine the revision guide knowledge with knowledge from your own school books and bbc bitesize. (BBC BITESIZE is a textbook equivalent).
If you do an obscure subject I recommend the Textbooks from Hodder education. (If the CGP Revision Guides and/or bbc BITESIZE doesn't exist for your subject Do this) I DO NOT RECOMMEND THE "MY REVISION NOTES" BOOKS
CGP also do other resources like 10 minute test books, honestly unless you have endless money they are not worth it.
ALSO I RECOMMEND SENECA.
Also I recommend that you subscribe to some Youtube channels that follow the speciation. (Primrose kitten, freesciencelessons ect)
And subscribe to some YouTube channels that are related to the subject but don't follow the spec (THIS HELPS WITH APPLICATION QUESTIONS) For physics I recommend Electroboom for bio I recommend the thought emporium and for chemistry I recommend Neil Red and for maths I recommend minute math