jQuery Mobile First Look
As a long term user of the jQuery library for web applications I found this book was a great introduction to using jQuery for mobile applications, giving explanations not only of the differences with the web version but also of mobile application requirements. The book starts by explaining the jQuery framework and discussing the differences with other mobile frameworks before moving on to configuration and extending jQuery over the first three chapters. The rest of the book concentrates on techniques for mobile applications including dealing with navigation, the use of AJAX with forms and list views for organising and laying out content. At the end of the book is an appendix which presents a useful list of API calls and properties for jQuery Mobile internals.
In all I found this a great book to get a handle on using this new version of an old favourite.