Ah, while you were off dealing with the mindless Scourge, this scroll arrived for you. I would think it's some matter of importance as it seems it bears the seal of the warrior trainer Dannal. I would take some time to read it before heading out again.
I will be here to train you as you grow in experience... find me as often as you like. I charge a minimal fee, but you'll find everything I can teach you to be worthwhile.
Go now and test your skill. Many more things will become known to you as you gain experience, some of which I am unable to discuss with you here. Just know that Sylvanas will need warriors with your type of strength in the future. You will be the backbone of our salvation. Do not forget it.