Thank you for your advice. In my case it's not "re-learn linear algebra" but "learn linear algebra... after first learning calculus and how to understand/write a proof." :) At 32 I'm not certain if this is a worthwhile way for me to go...

That being said, I haven't given up completely. I'm starting to read "The Haskell Road to Logic, Maths, and Programming" in the hopes of finally being able to grok proofs. At the very least, I feel that learning more math can only help me as a developer.

For others reading this, this edx course on Probability seemed like it was really good, until my lack of maths background caught up to me: https://www.edx.org/course/mitx/mitx-6-041x-introduction-pro... For Linear Algebra, check out http://www.ulaff.net/