So i am a subtlety rogue, Lv 20 trial account (until this Friday) and is looking in my spellbook and it says to go to my ability trainer to learn this new talent, mutilate and mutilate off-hand. when i go to the ability trainer, it doesn't have it. not sure what to do.

It is a bugg. the ONLY way you can get the skill "mutilate" is if you have the speculation also known as "talen tree" called Assassination. this is the only way you can get the skill mutilate. you cannot learn it otherwise from anyone in the entire game without this spec.

also Mary M Trolling is for kids. go fk yourself why don't you people who play WoW at least 20% of them even 30% maybe who arn't kids and have a brain for themselves don't need to troll on a forum like you do. i didnt know you kids got a kick out of being small minded now a days, eh whatever floats your boat

Get a life.

Lol play a game that requires stategy>go on the internet to tell people to get lives