Building an Energy Monitor

Hello I was wondering if anyone can help me here

I am trying to build an energy monitor using the instructions from openenergymonitor.com

The program written on openenergymonitor.com seems really straight to the point and I was wondering if I could get assistance on a more detailed sketch to build an arduino energy monitor.

Thanks.

Did you see this project?
http://www.ladyada.net/make/tweetawatt/

Thank you I would look it up