That's why I had trouble getting in to hockey when I was younger. I used to not be able to track the puck when I first started watching too but you get used to it. And it does seem complicated at first but there usually aren't a ton of different calls made in the game.
http://www.njyhl.org/pages/hockey101/101_penalties.htmlSums it all up. Icing isn't really a penalty by the team who does the icing gets penalized for it, and that's the call you'll see the most by far.
Seidenberg is out of the lineup today.