I finally made a tutorial on hairing...been meaning to for ages! I get a lot of questions on this so hopefully this will help a bit. Of course, if you have any questions please ask.
I've only been doing this a couple of years so I'm really no expert, but I hope it is helpful nonetheless.
The unicorn in this tutorial was a commission for =cloudrunner64
of her character, Nalani. I will add some photos of her on deviantart soon.
Hope you enjoy