Recently, I seem to have been stricken by a learning bug. I have just been craving knowledge of all sorts. I currently am not in college, and it has been several years since I took a math class. I had Intro to Astronomy last semester, and that was pretty decent. However, I currently am wanting to just do some self-study, and am wondering if anyone has any advice on which materials may be of the most use. I remember being pretty good in math back in high school, but due to my apathetic nature at the time, did not do anything with it, nor did I try to excel at it while I was there. So, I would guess that the most recent math studies I have done would have been the basic high school trigonometry and slightly into pre-calc. Lately though, I have been getting interested in the idea of math theory, though, I don't know that I have a strong enough foundation in math to start with any of that. If anyone could help me by suggesting materials that are concise and well written that would help get me up to speed, that would be grand, and much appreciated. Also, I plan on trying to learn some physics as well, and the same sort of help on that line would also be appreciated. I do not know that I am planning on making a career of anything I learn, and am not planning on attending school anytime soon, due to the financial burden it would be. But libraries are free, and I have access to University libraries as well. This is all mainly for the joy of learning, and the personal gratification I can receive from that. Thank you in advance for help with this.