I'm 31, and plan to go to school, part-time, in the winter, spring or summer. I know I'm going to totally bomb the math placement exam, so I want to learn (or freshen up on) as much as I can now. The last thing I want to do is pay a small fortune taking math classes for the next two years until I meet their standards for a BS in CS. I'll get bored quickly and likely drop out. I'm looking for instruction on all levels of high school math. Anyone have any recommendations? Thanks in advance!