Bobo's The Matrix Explained DVD is fantastic. I'd recommend it for any TA, regardless of language. You'll learn more in those 5 hours than 50 days of your own struggling and hacking around trying to learn piecemeal.
I was able to do lots of scripting and shader-authoring with minimal math knowledge, but in the past half-year or so, I've had to do lots of heavy math stuff, and it has opened up huge new worlds. I'd be interested in helping as much as I can, and learning what I can't help with.
Having a place to go for practical math questions is a good idea, especially without a programmer in the next room or on MSN messenger. Stickied.