Sam Ruby is still working on the latest edition of AWDWR. The beta book should be decent, the but the current speed of Rails development means most anything will be slightly out of date right now. That's not going to be too important for an absolute beginner, but always be sure to check which version of Rails any documentation is referring to as the subtle (or sometimes large) differences can trip you up.
In addition to AWDWR, I recommend going through the book RailsSpace since it takes the reader step by step through creating a full Rails application. You can then add on a reference book like The Rails Way. Once you're familiar with the basics of Rails, you'll find the official Rails API to be indispensable. To keep up with the latest changes in Rails, you should subscribe to Ryan's weblog and the official Rails weblog.
That's the basics. There are many, many other resources. In fact, one the challenges of learning Rails is that the documents is a bit, well, distributed around the internet. Many of the tutorials and interesting ticks to Rails have been written up in hundreds of different blog posts. In this case, Google is your friend, but again beware which version of Rails any particular post is referring to. Some supplemental reading includes:
In fact there are dozens of good Rails blogs. Note the ones you find in Google searches and good luck!