[noahgreen]

Hi,
Just finished through chapter 5. So, the book has been really great! Thanks for creating this great teaching tool.

I was wondering whether there's a formula reference card available online to purchasers of the text. This would be a huge help as there are many key formulas in the book and it would be nice to be able to refer to them in one concise list. Is such a resource available? If not, could you recommend any other free ones from the web?

Thanks again,
-Noah