"Digging Into WordPress is available in two formats: print and PDF. All printed copies of the book include a free PDF version that you can read on your computer (or you can buy the PDF version alone). We know it’s nice to have a real book to hold in your hands, but the PDF is also great for three big reasons:
- Hyperlinked. All the many URLs in the book you can just click to go to the web page referenced. There is also internal linking — you can click links in the table of contents to jump to those sections.
- Copy & Paste code. Much easier to grab code via copy & paste than retyping from scratch. Of course the page numbers in the book and PDF match, so if you are reading the book you can jump over to the PDF and go to that page to copy and paste. You’ll always know exactly where to find the code.
- Search. Using your PDF reader’s search feature it’s fast and easy to find what you are looking for."