Wicked Good Ruby 2013 - Wicked Bad Ruby by Matt Aimonetti
http://www.youtube.com/watch?v=VO-NvnZfMA4
http://createdbypete.com/articles/ruby-on-rails-development-with-mac-os-x-mountain-lion/
http://www.smashingmagazine.com/2009/04/26/five-reasons-why-designers-are-switching-to-mac/
https://groups.google.com/forum/#!topic/rubyonrails-talk/xJeOXnNArzI
Online Guides:
Why's (Poignant) Guide to Ruby
Learn to Program by Chris Pine
What Is Ruby? by Matz (creator of Ruby)
Books:
Learn to Program by Chris Pine (uses Ruby) [there's a free online version]
- mentioned in Why's guide
Programming Ruby by Dave Thomas
- mentioned in Why's guide
Beginning Ruby
- rec'd by the creator of railstutorial.org (search the guide)
Exploring Everyday Things with R and Ruby
- this looks cool