This tutorial is in French, but you can perfectly see the images. Maybe a day, I'll make this tutorial in English w/o my poor French voice. It's not difficult, you just need to look for understand, I'm sorry for my bad English tho. The tutorial is only for LEGION, I think I'll don't work with TLK because of M2 limits.
The tutorial is only a tutorial for adding in game, not in Blender. If you dont' know how to place a hairstyle on a race mesh, just go away please. This is only the technical part, not the Blender part or whatever. All the tools you need, you'll see them in the video. I hope you'll understand with the video.
Roccus tutorial in English