By Kareem Carr
Autodidactism is the art of self-learning or self-teaching.
It is not unusual to have to teach yourself a bit of mathematics. Here are a few resources you might find helpful.
1. An AMS guide (warning pdf) for good books to read by topic.
4. Academic Earth has a few courses on video.
5. Here is one more link that is near to my heart. Feed some hungry kids and learn some new words at the same time. At no cost to you, they donate rice for every word you get right.