You shouldn't need a tutorial to use the power supply. It's pretty straight forward once you look at what you get. The DC 80 replaces the battery in the camera, a power plug supplying DC power from the AC to DC transformer plugs into the DC 80. The transformer will be plugged into your wall outlet. Here's the link to an aftermarket version which should help with what I've said, it's JUST for referancce, I have no idea whether it's of good quality or junk, and for whatever reason it says it doesn't include the power cord but then again the transformer might have a built in plug.
http://www.dhgate.com/product/power-ac-adapter-ack-dc80-ack-80-for-canon/142951042.html
"A skill is developed through constant practice with a passion to improve, not bought."
