Wanted to comment about watching procs since I didnt see anybody else mention it. For some classes youre giving up quite a bit of power and/or wasting talent points if you ignore procs.

Personally I use Mik's combat scrolling text add on. You can tell it to show you procs from your party (and you can ignore the ones you dont want so youre not inundanted with stuff you dont care about). So for example it shows when my enhancement shaman has a 5 stack of maelstrom weapon. It shows when my fury warrior gets a free slam prom, etc etc.

Just throwing it out ther.