Assigning different UV maps to different textures:
https://www.youtube.com/watch?v=lvGAM_Bg-AE
Unwrapping/Seam guide:
https://www.youtube.com/watch?v=vB79dZHp-vA
I don't know if those will help anyone, but they definitely got me on the right track.
"Sorry poklaying dota2." -Zeecount 2014