This book, by Syd Field, is very nearly a waste of money. I guess that if you've never read anything about screenwriting it might be more helpful, but after Goldman's books and How Not to Write a Screenplay, there was very little that was new. An awful lot of it was things like how one develops characters and story ideas. I can't imagine a person starting to write without being able to do that on their own — what else could drive a person to write than coming up with stories and wanting to tell them? Of course there are things to know about creating characters, but I didn't feel that they were covered (e.g. be careful of making the star ever feel small).
Worse, the book is horribly dated. It's new chapter covering computer software mostly talks about how abandoning a typewriter for a computer may be terrifying but can be worth it. Screenplays and hollywood seem to have a lot of conventions, and these conventions seem to be shifting and changing. How fast I don't know, but a book which covers what they were like in the late 1970s isn't reassuring.
It does have a few interesting insights on writing, though. While largely covered in other books (and I suspect most people's experiences, to a degree), his description of how "everyone is a writer" (i.e. when you tell them your story, they'll tell you how you should write it) was interesting.
I don't recommend buying it, but it might be worth skimming if you can get it for free (e.g. at a library).