Another important book

Not that I've read it, mind. I read another book by the same author on the same subject that proved incredibly useful, but I couldn't get hold of a pdf version. But it doesn't matter because 'Screenplay' is considered to be his most important book, so here it is. The book gives you an idea of what you need to think about if you're planning to write a script for film. It focuses on the structure of a film and how you should develop your characters, etc... Once again, if you find it interesting buy a copy of it for less than £10.