Book excerpt: Essential facts, advice, lists, documents, guidelines, lore, wit, and wisdom: Along with fun and irreverence, it's what readers have come to expect from the "Whole Library" series. In a one-volume compendium that's by turns encyclopedic, useful, and engaging, this latest entry provides an overview of digital libraries, covering the state of information, issues, customers, challenges, tools and technology, preservation, and the future. From blogs to Wikis, highlights include: digitization project planning tips and tools; the value proposition of the digital library; lists of Internet libraries, libraries that I.M., libraries that podcast; and interpretations of NextGen demographic data. Collecting insights from library luminaries as well the perspectives of interesting experts from outside the ranks of library professionals, "The Whole Digital Library Handbook" decodes the jargon and cuts to the chase.