Hi all, I've started the course of Physics at college last year and I need some advice right now. My main areas of interest are General Relativity and Quantum Mechanics, and these theories as well as every math needed to understand them wouldn't be covered in the course in detail (General Relativity wouldn't even been explained a little), so I've gone to the course of Mathematical Physics. Right now I'm studying advance linear algebra, complex analysis, analysis over Rn and differential geometry of manifolds. The only problem is that all of this in some way made me "forget" how to deal with basic conceptual physics. When I was on high school I understood well about forces, energy, motions, in general I had a good understanding of the phenomena itself rather than the underlying math. Today I simply can't understand the phenomena. A very good physicist I know told me to read Feynman's Lectures on Physics, but it's not helping. I try to read that, and it seems like impossible to get this kind of reasoning. I lost much of the intuition I had before and this is really bad, because if I get an advance physics book the author supposes that I know how to think about energy, momentum, colisions and all of that. It's also hard to deal with these basic books because the author supposes that the reader knows nothing of math. I've thought on studying Spivak's Physics for Mathematicians, but I don't really like this idea because it's an approach for mathematicians, and well, I'm trying to be a physicist rather than a mathematician. Does anyone know how to deal with this kind of situaton? I'm really needing to solve this, because I'm already finishing the second year of course and I still don't understand basic concepts of Physics. Next year I'll have advanced mechanics, advanced electrodynamics, and things like that, and without knowing how to reason with basic concepts I'll be in trouble. Any kind of help is appreciated! Thanks very much in advance!