You can search the Forum's WEB page for the word shed. Each 'hit' will have the word 'shed' in it and you can click the URL to see if the post has anything useful in it. And I did see a few that do.
Also, you can go to AltaVista WEB Search and enter in the following (including the " and the &): +"shed plans" & +build Then press Search. You'll get quite a few hits that talk about 'shed plans' and 'build' (hopefully in the context of build-it-yourself). You can sift-out the URLs that are of no use to you. At worst, you can go to lumber yards and home centers and book stores for publications with all kinds of details on how to do this.