a level sociology or psychology Watch
For gcse I do frequently read books on them so I suggest reading books and watching videos to give you an idea what your more drawn to- hope this helped!
I do both at A-level and would definitely recommend sociology over psychology. I'm saying this as I'm in my 2nd year and memory wise learning sociology is way easier than psychology, there are a lot more theories/theorists, but less topics. I'm not sure if this makes sense but with psychology there are lots of different topics and different experiments which can become confusing to learn. From experience I'd say I remember more of sociology than Psychology and in terms of the exams your memory is whats going to help you. Also sociology is a lot more common sense and you see it in day to day life, whereas psychology is more of learning new content, processes, structures etc which can be a bit hard. Some people do find sociology boring so go with what you personally prefer but a lot of the content really is common sense its just working on structuring your answers and how to word it right, so be prepared for the essays too.