New to coding - Chris Pine's Learn to Program is THE book. I like it more than Why's guide, or any website.
New to OO - Try Sandi Metz's Practical Object Oriented Design in Ruby, this book should be your second ruby book, as it teaches you how to write good Ruby.
New to Rails - Try the Hartl tutorial or Agile Web Development with Rails
New to Command Line Apps - Build Awesome Command Line Applications in Ruby, it's an O'Reilly book I liked.
Advanced Ruby - Confident Ruby by Avdi Grimm, along with his Ruby Tapas screncasts.
1. The Pickaxe Book (Programming Ruby by PragDave). You can read the book itself, but one thing I love is that it explains the entire stdlib in an appendix. I learned a lot just by keeping it near the bathroom and flipping through that appendix a few times each day.
2. POODR by Sandi Metz (referenced above) is about OO but you will also get a sense of how to write non-web, pure Ruby applications in a general sense.