I found this book to be a quite good accelerated overview. It covers all the core concepts (RPC, widgets, projects, CSS) with useful and understandable examples. It covers advanced topics like custom serialization, the details of CSS, and a lengthy piece on internationalization with a good localization example.

In comparison, GWT in Practice (although a good book) left me not understanding the client side as well as I'd like. The criticisms from the other reviewers are fair, but this book deserves a much higher score. It was worth the time I put into it.

GWT 2.0 is out, and this is still a good book. The UiBinder is not covered, of course, but the core concepts are still mostly relevant with only a few deprecated topics covered.

Accelerated GWT from Apress by Vipul Gupta has shown me that you can't judge a book by its cover but you can judge a book by its title. As clearly indicated by the title, this book isn't professional GWT or advanced, it is accelerated, which when you really stop to think about it means " to cause faster or greater activity, development, progress, advancement." ([...]) Acceleration is exactly what this book is about: it covers pretty much every topic that is basic to GWT and it covers them very well.

That being said, the back cover caused me to judge this book incorrectly. The "Apress Roadmap" on the back indicates that Accelerated GWT should come after Beginning Google Web Toolkit and I disagree. I think Accelerating GWT should be on par with a beginning book. While the topics it covers are very diverse and dispersed it is only 300 pages long and thus doesn't cover any of the chosen topics in depth.

Overall I really enjoyed the book's content even if it was sparse at times. I think this book is a great tool to get up and running using GWT in no time but if you are looking for advanced information on any topics then consider purchasing another book.

, and excellent book for both beginning and intermediate GWT programmers.