Need recommendations on learing how to calculate odds...

[Big Country]

It is this simple mainly because your two hole cards out of the deck leaves 50 cards, and each card in a 50 card deck has a 2 percent chance of showing. Thus, each out has a 2 percent chance of showing with each board card. Technically after the flop there are 4 unseen cards, but the difference in the math nedded is so minute that it is easier to consider each card 2% chance vs. the 2.13% chance that 1/47 really is