I have been browsing online document storage and sharing websites and saw two that I wanted to note.
The first is docstoc. This site has a variety of "professional" documents that you can view and download. These are are both useful for the variety of content, but can also offer a template for your own use. Case in point - while browsing the keywords "technical theatre" there were a variety of theatre specifications that came up.
The second is Scribd. You can find a variety of documents/papers on different subjects that can be downloaded, shared, or commented on. There doesn't seem to be as much relevant to theatre here - but there was some interesting project management documents.