I am working in hospital processing infection data, and start to read more and more articles on regressions and statistics, having realized that my mathematics background is not sufficient for me to handle all the maths inside the article. I plan to do some self-study.
I have seen from here that calculus and linear algebra is needed for going further in biostatistics, I am thinking of finding some textbook for that, preferably free textbook online.
And one more question, which one should I start first? Calculus or algebra?
I know this may not be relevant to be asked here, but can anyone here kindly give me some suggestions that I can start my reading? Thanks.