One of the other reviews said it, unfortunately, well: the books of this type are nicely done and comprehensive in their way but you're fooling yourself if you really think these are going to help you get a play produced. And it's not just a matter of writing a good script; you'll never know because most of these markets will never even respond, no matter how carefully you adhere to their guidelines. I've submitted to the Victory Gardens Theatre multiple times - a theatre that proposes to advocate local playwrights, of which I am one - and I have yet to even get a response. And, yes, a SASE was enclosed each time. I get the impression that there's a nice and sizable trash-can near their in-box! Anyway, you'll find a lot of "oh-thou-had-better-be-professional-when-submitting-to-us-because-we're-quite-impressed-with-ourselves" type attitudes, but the likeliness that they'll act professionally in return is minimal.