This book is an indispensible tool for users of Macromedia Director. We found it to be easy to use, clearly written, and a great resource for all those third-party Xtras that extend Director's capabilities. Because this is a 'reference' book, at the office this book is usually hard to find because it makes the rounds so often. (I'd recommend you purchase more than one copy if you are in an office environment.) I think what I like best is that Director users of any experience level can benefit from this book--from novices adding new transitions to experts using the book's extensive Lingo libraries. Good developing!