Not that it matters too much, but the Trade Skill Sticky at the top of this forum goes over this pretty well:
Quote:
Q. I hit 150 skill, and there's no trainer! What do I do!?
A. You need to buy the First Aid manual. For Alliance, the vendor (Deneb Walker, I think) is in the ruined city of Stromgarde, in Arathi Highlands. He is in the Alliance-friendly section, right outside the prince's room. For the Horde, the vendor is Ghok'kah, in Dustwallow Marsh.
Note: These vendors also sell the books for Heavy Silk and Mageweave bandages. Buy them!!
Q. Okay, now what? I'm stuck at 225, and there's no new recipes...
A. Well, now you need to do the FA quest. People hate this quest. It took me three tries my first time to get it, and only one my second time. It is a lot easier if you do it with someone else (although they need to have the bandages, or be on the same quest). The quests are Horde Trauma and Alliance Trauma. You can look them up :)
Alliance (starts in IF): http://wow.allakhazam.com/db/quest.h...wquest=6625
Horde (starts in Orgrimmar): http://wow.allakhazam.com/db/quest.h...wquest=6623
Bolded to emphasize the relevent areas.