For those of you new to construction, I found a good diagram of how a building is constructed. This shed project is a basic building for someone to store lawn equipment or as a potting shed.
http://www.motherearthnews.com/uploadedFiles/articles/issues/2011-04-01/Garden_Shed.pdf
And here is the link to the shed article from Mother Earth News.
http://www.motherearthnews.com/do-it-yourself/garden-shed-plans-zm0z11zgri.aspx