To cut a long story short, I'm considering applying for graduate medicine. As a law student, I don't have the required Chemistry A-level (nor Biology/Physics). I want to sit it as an external candidate, but can't afford to do the whole distance-learning-with-a-tutor business. I would need to self-teach.
To anybody who has experience of self-teaching Chemistry at A-level: is it do-able and how long did it take you? I have A*s in 3 sciences at GCSE and close on 100% in all of them, so science isn't (or at least, never used to be) something I struggled with.
Advice in this respect for biology, human biology and physics too would be appreciated, as I need to choose one of those alongside Chemistry. Do any of the three stand out as being more difficult than the rest?
Also, on a side note, are there any Chemistry/Biology/Physics A-levels which don't have practical exams, or do all exam boards require them? Much as practicals sound fun, they are also expensive to take as an external candidate so I'd rather avoid them if possible.