Learn Ruby with the Neo Ruby Koans Great way to lean Ruby by fixing errors in set of well thought of unit tests.
Ruby Conf 12 – Y Not: Adventures in Functional Programming by Jim Weirich (by Confreaks) One of the deepest mysteries in the functional programming world is the Y-Combinator. Many have heard of it, but few have mastered its mysteries. Although fairly useless in real world software, understanding how the Y-Combinator works and why it is important gives the student an important insight into the nature of functional programming.
Test Drive the RubyMotion Console An in-browser demo of the RubyMotion REPL built on Pieceable Viewer.