This is what the book, all 711 pages, is concerned with and one understands why the book is so big: there's a lot of stuff to cover! Nancy Conner, the author, is a technical writer and editor (who started out with a PhD in English) who has also written the 'missing manuals' for e-Bay and QuickBase. The book is built to O'Reilly's usual high production values with screen shots and examples galore. There's a Website for the book but it doesn't contain much of interest apart from a document giving confirmed errors.
The one shortcoming of the book (although this may be a little unfair, given that it is supposed to be a 'missing manual') is that there is no comparison of Google Apps with the competition. For example, there's Zimbra, bought by Yahoo, which claims a number of advantages over Apps that may interest corporate users. There's also Zoho, which has a much wider range of applications than Apps, and Microsoft, has not been taking things lying down and is now promoting Microsoft Office Live, especially to small businesses. Consequently, a final chapter on assessing the competition would have been useful. 2b1af7f3a8