Only a matter of time before they patch and all classes get 3 talent buttons. When you enter an instance, a message will say "you are entering an instance, would you like talent choice 1, 2,or 3?". You pick 1, and a message says "talent choice 1 is for pvp, you might try 2 or 3". You press 1 and a message says "press 1, 2, 3, 4, and 5, in any order repeatedly, meanwhile occasionally moving your character out of fire....enjoy this instance!".
go nuts with your spec, goto heroic dummy and make sure you can do the minimum dps for a raid or instance, inform your leader that you are playing the game to have fun. If he/she would prefer you not have fun, then let one of the demi-gods in this forum tell you how to play :)