I have been using this site today and so far it has been great. They always mine the most profitable coins so you always get the most out of your KHS.
How to Start?
"To start mining with us all you have to do is add funds to your account, Head over to the Trade page, Buy KHS that are available in the sell orders. It's as simple as that! After that the KHS are credited to your account you will start earning mining rewards every 10 minutes."
It literally is that simple, I would recommend sending even a little over there and leave it for a day then go back and see the profits
The Site -
http://scrypt.cc?ref=baaOfEdit; Terrible grammar