I get quite annoyed with being unable to understand the equations of things that interest me (i.e I understand the concepts of things like pascals constants, and general relativity, but have no idea how the maths 'prove' it)

are there any books I can get to learn/understand maths better? I am fairly competent at maths, I got a very good GCSE in it, but never pursued it beyond that.

also, a little niggling question. Can a law be 'wrong'? I frequently see things along the lines of "black holes break the laws of physics" surely if the law can be broken the law is, on some level at least, false? (I'm not trying to argue against top mathematicians, I'm just trying to understand if it's commonly accepted; either that things like BH's only appear to break laws, and we simply don't understand it well enough; or the Laws are not fully accurate?)