If you looked closely at my previous post on Milwaukee Rep’s prop shop, you will have noticed a link to Mike Lawler’s webpage. Mike is the author of Careers in Technical Theater, a book I have not gotten around to reading yet, unfortunately. The reviews are fairly praiseworthy, though, and it does have information about props.
The rest of the website has a lot of useful resources as well. He has put together a list of U.S. academic programs in technical theatre, a survey of technical theatre earnings in 2006, a collection of links relevant to technical theatre and all its branches, and a list of the various publications devoted to backstage work.
Mike also runs EcoTheatre, a blog about creating theatre without sacrificing the environment.