I've just been reading Avdi Grimm's Confident Ruby and I think it's an amazing book for showcasing good use of Ruby and patterns of Ruby code and API design.
For tutoring I can just suggest joining a solid experienced team as a junior developer and learning from them.
Run through every tutorial you can find, improve upon the code in some way, then write your own blog post about it.
If you're really wanting to jump into some real-world code, checkout some node.js and ruby projects on GitHub and start contributing. This can be as simple as fixing/updating documentation or filing bugs. Improving tests is a great place to start.
If you learn best via tutoring, try http://railsmentors.org (free, not sure about quality of mentors), http://learn.thoughtbot.com ($249/month, Ben and Chad are awesome), or use Clarity! Some of the Ruby folks on Clarity that I know and can recommend: