MiningRigRentals is Faster, smarter, more powerful way to rent or lease mining rigs. Whether you're new and want to try mining out before you buy equipment or you're a veteran looking for more hash at a coin launch.
There's a few sites that offer this service out there but by far the best is MiningRigRentals! They not only have a great interface but offer excellent support, if you don't get the advertised hashrate or the server goes down you don't pay!
This link for registration
and this link for quick video tutorial on how to rent a mining rig