Take a look at the MIT Open Courseware math classes. These are particularly good when you're on the train. You can find them online on Youtube, iTunes U, or a

Take a look at the MIT Open Courseware math classes. These are particularly good when you're on the train. You can find them online on Youtube, iTunes U, or at their site: http://ocw.mit.edu/courses/mathematics/ http://ocw.mit.edu/courses/mathematics/ Understanding calculus helps you to understand the relationship between functions, which is very useful with doing FP-like things in your code.