It probably sounds stupid at first, but I feel that it might help me to expand on my knowledge. My idea was to read the GCSE topic first, then extend on that background knowledge reading A-Levels stuff. I'm not doing this to 'show off to friend's or whatever, just a genuine interest in expansion of current knowledge.
Understanding it is not so much a problem. I'll probably watch YouTube videos on it, and I self-taught myself 3 subjects for GCSE modules in January as I missed out on a whole year, managing to get A*AB.
What do you think, is it unnecessary work? And if so, can you suggest a better alternative? Many thanks!