If you just want enough information to cover the basics, this is not a book you will want to have. But if you want to get an in-depth knowledge of Fonts,Forms, Formatting, Graphics, Objects, and Output - - this is one of the most detailed references you will find about the Portable Document Format (PDF). Clear, Concise, and Encyclopedic in Scope. As with all published works there are some errata, and Adobe wisely allows you to download the corrections or a complete edition from their web site. If you regularly work with PDF files, this book will prove most useful to have on your shelf.