A level HistoryWatch
we used these revision guides (https://www.amazon.co.uk/Revision-No...939911&sr=8-23 ).
You can find most of them cheaper if you look for second hand ones (ebay, depop, world of books, music magpie, facebook), I know libraries are shut atm but they might have copies you can look through (my local one did have some, not sure if everywhere will), could possibly also photocopy some of the pages if you dont want to buy one right now?
I did the witchcraft course which didnt have an OCR textbook, so we used one recommended by OCR along with the OCR revision guide, not sure if you have one without a textbook?
Might be best to look at the specification and OCRs website to see what they recommend & possibly get in touch with your school or teacher to ask what they recommend .