This is too good not to share.
One of the best books on understanding, installing, and using Debian and Debian-based Linux variants is now available for purchase in hardcopy or free electronic download (PDF, EPUB, MOBI, HTML - contribution requested) here
.from the Foreword of the online edition:
Linux has gathered a fair amount of media coverage, which mostly benefits the distributions supported by a real marketing department — in other words, to company-backed distributions (Ubuntu, Red Hat, Suse, Mandriva, and so on). But Debian is far from being a marginal distribution; according to a German study made in early 2009, Debian is the most widely used distribution on servers (with nearly half of the responding companies having at least one Debian server), and the second most widely deployed on desktops (right behind Ubuntu, which is a Debian derivative).
The purpose of this book is to help you discover this distribution. We hope to share the experience we've gathered since we joined the project as developers and contributors in 1998 (Raphaël) and 2000 (Roland). With any luck, our enthusiasm will be communicative, and maybe you'll join us sometime…
The first edition of this book (in 2004) served to fill a gaping hole: it was the first French-language book that focused exclusively on Debian. At that time, many other books were written on the topic both for French-speaking and English-speaking readers. Unfortunately almost none of them got updated, and today we again find ourselves in a situation where there are very few good books on Debian. We truly hope that this first English edition will fill this gap and help many users.
The book presents Linux topics using a case study approach. And although based on Debian, most of the subject matter (sans details) applies to other Linux distributions as well.
An excellent resource which can be read online
if you prefer.
If you're thinking of taking the Linux plunge - or you've been frustrated after a previous attempt - get a copy of this book and see just how easy it actually can be.