As a philosophy student, I never went beyond Calculus. Since completing my studies, I began trading equities and derivative products. I've made efforts to study the mathematical aspects of finance, but lack the preparation to really understand the subject. Some of the required mathematics, is simply way over my head. What advice would you give to someone studying the mathematics of finance on their own? What books? Any websites? I don't plan on going back to school for additional training. Any help would be appreciated.