You must be getting ready to start a big project! A backyard shed can be built by just about anyone. First you need to find a relatively flat spot in the yard, stake out an area for the shed. Add one foot or so extra for extra room. Add 4 inches of crushed rock or gravel. Rake the gravel so that it is level. Make the skids for the shed. Cut four by four lumber to size according to the dimensions
. on the shed. Place the first skid so that it sits about 12 inches from the outside of the shed door. Do the same for all sides. Nail sheds joists to the skids. Do you want more? Go to http://www.ehow.com/how_5019780_build-shed-foundations.html for even more details.