The first one is excellent. If you are a beginner like me and want to learn jquery, I highly recommend it. I have read three times the first 6 chapters and I am still reading and digesting the rest of the book slowly.
I am disappointed about the second book a bit. If you need a reference on your desk, it may serve what it's supposed to do. But you can find more information from http://visualjquery.com/ with examples. This website is an excellent resource for jquery.
The books does not give enough examples. You can find more in the above website or jquery.com document.
The first one is
In his talk, he recommended only one book which is least bad. That's the second one I am going to buy.
Some cretics comment about lack of examples in this book, but overall reviews are good.
The third one is
jQuery in Action
I am hoping to learn more about jquery from this book.
There will be another jquery book is coming out soon.
jQuery UI 1.6: The User Interface Library for jQuery
And the author of Learning jQuery, Karl Swedberg is publishing another jquery book in May 2009.
Well I have to how much left in my wallet...
I used Amazon Associates for the above link. I can earn some Amazon gift card so that I can buy more books!