Apprentice (Trainer 0)
Undercity: Mary Edras
Orgrimmar: Arnok
Thunder Bluff: Pand Stonebinder
Tirisfal Glades: Nurse Neela
Durotar: Rawrk
Silvermoon City: Alestus
Mulgore: Vira Younghoof
Eversong Woods: Kanaria
Blade's Edge Mountains: Fera Palerunner

Journeyman (Trainer 50)
Undercity: Mary Edras
Orgrimmar: Arnok
Thunder Bluff: Pand Stonebinder
Tirisfal Glades: Nurse Neela
Durotar: Rawrk
Silvermoon City: Alestus
Mulgore: Vira Younghoof
Eversong Woods: Kanaria
Blade's Edge Mountains: Fera Palerunner


Expert (Book 125)
Dustwallow Marsh: Balai Lok'Wein

Artisan (Quest 200)
Arathi Highlands: Doctor Gregory Victor [Triage]
Level minimum: 35

Master (Book 300)
Hellfire Peninsula: Aresella
Level minimum: 35

Feel free to create a post if you have any comments or tricks to add!

Immortel

-