To be honest, you won't learn anything through playing with play money online. People cold call for the hell of it, see the blind with whatever hand, just because they can. If you want to learn, make a deposit and play the micro hands. Full Tilt goes down to $0.01/$0.02 blinds I think. The best way to learn is through a Sit n Go tournament. You can find really cheap buy ins and will encounter 'realistic' play due to the other players wanting to win the prize at the end. Better yet, enter a freeroll competition (guess what, it's free!) that acts as a qualifier for a latter tournament. If you win, hey! You've qualified for a potential cash prize for free! ;)