I am a newbie to physics forums and I would like to say thank you to the creators of this site because it is going to be a huge help to me and my future endeavors into physics!!! I honestly do not know how it took me so long to find a forum with this kind of topic as I have been a member of cloudy nights forums for some time now and no one ever mentioned it!! Sorry about the long intro but I will get to the point. While I have a pretty good understanding of the universe and all objects in it I lack the mathematical understanding that it truly takes to see it for what it really is!! Honestly, I had to start from scratch when it came to my knowledge of mathematics but I am slowly but surely filling my head with everything from basic algebra to calculus , differential equations , linear algebra , topology etc etc I started this thread because I would like to know what exactly are some of the main and most important topics of classical mechanics I should learn first before delving into general relativity and quantum mechanics. I have a boat load of books on mathematics of physics ,cosmology , classical physics, string theory , m-theory , quantum mechanics , QED , QCD, quantum and classical field theory etc etc. I literally have over 300 books on every subject you could imagine , but what's funny is most of them are introductions to the mathematics that do not understand at all lol I just simply bought them because I love books and I want to have every little piece of information I could possibly need right at my fingertips!! My main interest is cosmology right now but I am going to be getting into quantum mechanics and the harder but yet fun stuff once I feel my knowledge of mathematics is prepared.