There are some cool videos on google video and you tube with Phil Gordan that help you work out poker odds. The videos show where to mke a calculated call and how to work out if your getting value for money.
Heres the link
Final Table Poker with Phil Gordon - Learn to Calculate Outs & Pot Odds - Google Video
This one shows a series of short clips that help improve you =r overall game and they give expert tips from once again Phil Gordan. Use the videos in the side bar aswel.
YouTube - Expert Insight Poker Tip: Pre-Flop Match-ups Part 1