Now, this book has 444 pages compared to the 272 pages from Django book. There is much more to teach about jQuery than about the django template language :) .
The book has 11 chapters and 4 great appendixes. It starts off teaching you how to set up a page to use jQuery, teaches you selector magic and from then on the example scripts get more and more complicated as the chapters pass by.
Once you've read the first half of the book (Free sample chapter), you're good to go. At this point you should know what is it that you can do with jQuery and start using it. But this is the moment where it just starts to get interesting.
Chapters, 7 on Table manipulation, 8 on Forms with function and chapter 9 about Shufflers and rotators show you how to do amazing stuff you (well, I) wouldn't have thought of. This is the most important part of the book as it shows you how to put all the jQuery functionality together and teaches you several awesome tricks and techniques to make transparency gradients, lightboxes, scrollers, sort, tables, invoices and tons more.
This is a great book, that could have easily be divided in two books, Basic jQuery and Mastering jQuery. Goes from the basic to some medium/advanced level. Every web developer (front end and backend) should read this in order to know how to provider great user experience :).