The list author says: "The books I have run through via recommendations, plus trial and error that have helped me build a solid foundation in Ruby on Rails coming from a terminal based C programming environment"
"Intermediate-advance book, with rails 3.0 on the horizon and the merge between rails and merb, I choose this book via web recommendations as a way to familiarize myself with the merb framework. It also gears the reader towards applying this knowledge to rails 3.0"
"Beginner-Intermediate book. Highly recommended all over the internet great way to bridge from foundation rails to the rails way if you want to gain a slower solid approach to the framework. I read The Rails way first but given my experience in programming its much easier for me to pour through a quasi reference manual then someone who is just wanting to start out."