Influenced by The Open Source Data Science Masters
Multivariable Calculus. MIT OCW.
Multivariable calculus. Khan Academy.
Linear Algebra. MIT OCW.
Linear algebra. Khan Academy.
Statistics One
Intro to Statistics: Making Decisions Based on Data
Statistics: Making Sense of Data
Probability and statistics. Khan Academy.
John W. Foreman. "Data Smart: Using Data Science to Transform Information into Insight". http://www.wiley.com/WileyCDA/WileyTitle/productCd-111866146X.html
Interesting IPython notebooks: Curated collection of IPython notebooks that are notable for some reason.
Metacademy: Metacademy helps you find resources to improve the skills you care about.