How To Calculate Pot Odds

This video does a great job at explaining how to calculate pot odds, and compare them to your drawing odds.  If your drawing odds are greater than your pot odds, then you will be assured “Positive Expectation” or +EV.  Poker is all about finding +EV situations and exploiting them, while avoiding -EV situations (when pot odds exceed your drawing odds).

In my opinion, understanding statistical expectation is really the only thing that one really needs to master the game of poker.  You can screw everything else up, but if you can master the concept of expectation nothing else will matter. 

Enjoy, and keep studying!