GCSE OCR Ancient History

Hey guys, does anyone do GCSE OCR Ancient History? There isn't a forum for it and there are very little resources on it online, I was wandering if anyone else does it, and if so, how do you revise? So far in my two mocks i've recieved a C and a D, despite getting an A* on my coursework, so something is seriously wrong with my exam technique, but I can't seem to find any resources online to revise from. Can anyone help?