Review: The Official Ubuntu Book 5th Edition

Ubuntu development is rocketing along and so are the various editions of Ubuntu related books. On the surface, the first thing I noticed about the fifth edition of the Prentice Hall book is that it's had a make over. The cover has (finally) lost the brown, "human" theme, once invariably associated with Ubuntu itself, and has taken on a more sleek and polished look. Of course, "never judge a book by its cover". What lurks beneath?