I understand that to make any sort of equations or mathematics I'll need some calculus and GR but beyond that I'm at a loss. What sort of books should I be picking up as a beginner before I can start touching on other things, such as GR? Is there something I should read before trying to attempt self-teaching differential equations or series expansions? I have no knowledge of where I should begin or where I should be asking this question. Specifics would be very helpful, such as certain books or certain authors I should be looking at. To give you an insight of where I would be starting, I have never had or took any courses in physics whatsoever and I have no idea what a Quantum Theory is. But I'm going insane wanting to learn more.