Ebook: Agile Web Development with Rails: A Pragmatic Guide

I bought this one with 'Programming Ruby' thinking that I would need both to understand what RoR is all about, but 'Programming Ruby' is still on the shelf and in a few days I was running the shopping cart example. Great way to learn how to use the framework. And from what I saw, the new version is evolving at the same fast pace as Rails. That's my next buy.