If you’re interested, Google for it…

Grinstead and Snell’s Introduction to Probability

…and scroll down to maybe the 3rd hit where you see the one in PDF format.

Click on it, download, **Save As**… to taste, then enjoy. It seems to be a full sized 518-page book, and it’s yours free.

I neglected to mention that the hardcover book gets good reviews at amazon. See them at:

No! Holy mackerel!!

I hope everyone else checks out your input. That’s fantastic. Thanks very much.

What kind of calculator would I need to input probability fomulas, save and then use them for Texas Hold 'Em Poker, please?

And how much math would I need for such a venture? (I’d get the formulas themselves from poker books, I should think.)

You might like this site as well.

My ~£10 Casio scientific calculator can’t store formulae. I think you need to move up to a graphing calculator (I have a ~£25 Casio one) to do that.

For Hold 'Em, the book in the OP is probably overkill. You’ll really just need basic combinatorics, and maybe the hypergeometric distribution.