WJEC GCSE geography

Hey all!
I'm currently in Yr10, fast approaching mocks. I'm doing GCSE geography, exam board WJEC.
Unfortunately due to staff long term illness I haven't had a geography teacher for about 9 months of the year, just constant supply.
I've been looking at the specification etc for the course, and have found out that there are WJEC GCSE geography A and WJEC GCSE geography B.
Our textbooks at school that we currently use say B on, but I'm wondering if these A and Bs are the same course, or two separate courses?
Also- any advice on how to revise geography content? Can't find many resources for the WJEC exam board unfortunately.
Thanks for reading, any advice is much appreciated!

A and B are two separate courses - so if your textbooks say B then look at the spec for B
You can use other exam boards resources but make sure they are applicable to your course e.g. AQA do tectonics and certain case studies, i know sure WJEC doesn't
I do WJEC geography and i use this textbook