These textures are just diffuses. You'll have to get your own speculars and normalmaps; some are supplied here if you're feeling lazy: https://mega.co.nz/#F!vZcECZzT!_ND0rBHTIBn52dC1oN65Ew

There is no set directory, please place them in whatever folder you want for your character. If you wish to use them for all females (not recommended as they're a large filesize,) the directory is textures/actors/character/female. They are for UNP and its variants. Also they were built with Halo's high poly hands and feet in mind. Quick link in case you live under a rock: http://mod.dysintropi.me/high-poly-feet-and-hands-for-unp-bodies/

They are high resolution and uncompressed, so it is recommend to have AT LEAST 2 GB VRAM, more is better. Feel free to use Texture Optimizer (http://www.nexusmods.com/skyrim/mods/12801/) if you need to resize or compress them. Be aware compressing, as always, will cause artifacting and discoloration.

Credits:

honeyvanity
halofarm
dimon99
hhaley
betterbecause
maevan2
zonzai
Seren4XX
hellosanta

probably more, this skin set has had no less than a million additions and revisions