Hi guys. I'm a highschool drop-out. I went back and got a General Education Development degree. I'm also doing grade twelve courses because I want to goto university and study engineering. My math is very weak but I feel if I work hard I can catch up. Right now I'm doing "Calculus and Vectors" and "Advanced Functions" at the highschool level. So let's say a great mathematician's knowledge is like a pyrimad. At the base are basics and higher up are more advanced areas that are built up from the base... I'm thinking it goes something like: Numbers, simple operations and arithmetic then calculus and using higher notations then near the top are concepts like Fourier analysis and functions. What should I know in terms of subjects? Thanks.