Javascript is a very useful addition to the arsenal of a budding web developer. jQuery is a framework that makes this tool even more useful. The learning curve can be flattened significantly with the use of resources like the excellent book jQuery Novice to Ninja

I like the resources provided by Sitepoint, and their technical writers keep me engaged in a way that makes it easy to learn. This book has taken its place in my technical library and has made using the jQuery Framework much easier.

I also like the fact that most if not all of Sitepoints books are available as ePub and PDF format, as well as dead tree format.

I encourage you to go to this link and get a free sample chapter to see if you agree with me.