First of all, you have two possibilities when you want to start playing poker, on the mac or on whatever other platform, be it table card game or computer assisted poker software, etc:
- Real Money poker game / Fake Money poker game, or Multplayer online poker
- Poker simulators, which can be called offline single player poker
Usually, real money poker software always come with a fake money mode. For the both best online poker rooms (Full Tilt and PokerStars), you will need to create an account, and creating an account doesn’t mean actually putting money in the game, you can create an account for free.
So still, two choices to make :
Choose whichever you want, just try both to see which one you prefer, i’ll post an extended comparaison between those two soon 
Now, for poker simulators, there are MANY MANY software around, but the one i have found to be the most entertaining is :
It’s user interface is polished and fun, with all kind of characters as opponents. You should really try it and leave a comment if you think it sucks or whatever I’m still looking for some other good offline poker software.
