The Reinventing the Tattoo beta is pretty awesome. The digital format is an improvement over the book, you can access all the content from the book, updated by Guy Aitchison, on your phone, tablet, or computer. The videos are inline, Guy is able to update the content from Hyperspace anytime, and every reader will immediately see the updated chapters. Add guest chapters and a forum for genreal questions and critique, and Reinventing the Tattoo is a resource every artist should have no matter where they are in their career.