Ya, you go back to your trainer for the branch you took for the lvl 375 bop epic set.
Horde
Dragonscale-Badlands
Elemental-Arathi Highlands
Tribal-Stranglethorn Vale
Alliance
Dragonscale-Azshara
Elemental-Searing Gorge
Tribal-Feralas
Just incase didn't remember where trainer was and all. They will teach you your 375 items, at like 9-10g per item, and I believe all require 3 primal nethers over all, along with other mats. With 1 for belt, 2 for chest, and bracers taking no primal nether.