First – playing too many hands.  I know that when you first start playing poker, you want to jump the gun and actually play, but the more hands you play, the more money you are going to be losing and that is not something that is the name of the game.

Next, playing above your bankroll and not knowing the rules of the game prior to playing.  These are two key mistakes that many beginner poker players actually make all of the time and this is definitely something that you should watch out for!