I realize I have to get much better on putting oponents on hands.

How should I practice this, it's a bit frustrating doing it while actually playing since I don't get feedback so often because there was no showdown or people muck. Also online gaming doesn't offer enough time for a beginner to think and I cannot play live as often as I would like.

Also, is there any good reading material on the subject? How do you practice this, is it just by playing or something else?