Online Math Learning.com
CosmoLearning – Subjects include math, science, economics, law, medicine, etc.
coursera.org – Learn from 595 courses, from our 108 partners.
academicearth.org – Online college courses from Carnegie Mellon, Yale, Stanford, etc.
MIT’s Open Courseware
codebymath.com – learn math while coding
N.J. Wildberger’s Math Foundations and Algebraic Topology series, or his popular Rational Trigonometry (to avoid sine and cosine).
FAQ for computer graphics algorithms
There’s lots of stuff out there, as demonstrated w/ “20 great math sites for students and teachers” .