Odds-calculator for PDA?

[freni126]

I've started to play poker online rather much lately since I find it quite easy to win money...
I'm no expert, far from, but I try to concider position of people betting and I belive I can read peoples play...

My next step I guess is to learn all the odds for each hand... so I can be better..

Is there any training for this? Some kind of quizz maybe? The best thing would be if there was a program for my PDA to prectice with...