Below are free shed plans that may be just what you need to start building. The sizes and designs vary.
After lots of searching online I have found this list of free plans. The blueprints include a material list and the detailed drawings with measurements.
Free Shed Plans
The resources used to gather the list can be seen here.
This gable shed is 10×10, can go in most backyard, and can blend will with the structure of many homes. This website also has other designs such as the popular gambrel design. The plans for the 10×10 are free, the other plans require a small fee to download.
If you need plans for a smaller shed check out these free ones from MyBackyardPlans. The designs include a gable and a gambrel shed that resembles a small barn. The size of the sheds are 8×8. Included is a material list along with instructions for assembly. All the details are provided including details for roof rafters, building the truss, and how to build the shed door.
If you need a small shed to put away garden tool this 4×6 lean to shed is your answer. The website gives you a good idea of the structure of this design. Includes a detailed drawings along with a step-by-step tutorial. Common material is used such as t1-11 to for the walls and building the doors.
Garden shed plans for a 6×8 gable style shed. These plans include actual pictures of the shed as it is being build. Lots of helpful information for details on building the roof , windows and doors. It also includes an exploded view of the shed that you can download.
Here is a big list that you may find useful. These files are in PDF and include an assortment of plans for sheds and other buildings. Check them out to get ideas for your next building project.