Okay, so next semester I'm taking Calculus and I'm freaking and out nervous as hell.

Here is what I'm proposing. I'm going to write a program that can be set in a scheduled task to launch every 10 minutes. This program will ask me a question, example....
"Which is the quadratic formula?", and I will have from a,b,c,d answer to choose from.

The next 10 minutes a different question will pop up.

I want to know before I build this, is there anything out there that can help me better my Calculus without taking too much time away from my job?
Anything free, or something that I can buy.

I'm trying to learn Calculus and make it painless and also able to integrate it into my day. So, when class starts, I'm ready.

Note, if I build the app, I will share it with vbforums. I'm just trying to avoid reinventing the wheel.