a little searching shows
this thread in which you can find :
Note for Alliance: Train to 150 in IF, to 225 in Darnassus, and to 300 in Aerie Peak, Hinterlands.
Note for Horde: Train to 150 in Orgrimmar, 225 in Thunder Bluff, and 300 in Camp Mojache, Feralas.
Dragonscale Trainer is in Badlands for Horde (in Middle), Azshara for Alliance (under Dalarath).
Elemental Trainer is in Searing Gorge for Alliance (Bottom Right), Arathi Highlands for Horde (Between Stromgarde and The Manor)
Tribal Trainer is in STV for Horde (middle-west, near Bangalash) and Feralas for Alliance (just past Thalannar in Thousand Needles)
Original guide by "name not given" :P
Can't find which lev u need to be to train 150 :(
Edited, Jul 9th 2007 1:02pm by samperor