For me I am horde, so my trainer happened to be behind my previous trainer who I could learn no more from.
Leather working is hard to make gold at until later levels. However once it is 250 + and your 35 + that’s when it really starts to shine. Seriously. Whether you choose Elemental, Dragon scale, Or Tribal. I suggest if your used to selling your mats to make your income. you stop once you get to the thick leather stage many recipes are costly, at that point and a few tips could make few bucks for you. Say for instance if you farm 1 stack of thick leather it sells on AH for 1g.
Instead make a better profit making Nightscape headbands. They vendor for 44s95c. Clearly you can see you can make a profit while skilling up. You could also camp AH for the 1g to 1g10s buyouts and just vendoring the headbands after crafting and making your skill ups untill they are capped. Or you could always AH but that takes forever.
There’s always a easy way and profitable way to do things while gaining skill ups in your said trade/craft.
also pay attention to shouts see what selling endgame whether it be iron feather shouts to Storm shroud to devilsaur or black dragon scale armor. you can pretty much sum up which of the three specs for leatherworking is flooded with people and which is not.
<yes my spelling sucks, yes so does my grammar.>