I would like to teach myself algebra one of these days. I paid very little attention in high school. Would eventually love to learn calculus as well. Right now, I just read this little book called, The Little Book of Mathematical Principles, Theories & Things by Robert Solomon. Pretty cool stuff. Has all these neat ideas packed into one or two pages per concept and explains formulas and whatnot in very easy to understand language. Awesome little book I sort of use it as a daily devotional or whatever.
If you're frightened of dying, and you're holding on, you'll see devils tearing your life away. But if you've made your peace, then the devils are really angels, freeing you from the Earth.