I've pretty much spent this past week learning Ruby, and here are some rather useful links to get you up to speed:
Ruby official page
http://www.ruby-lang.org/en/
Ruby Standard Library Reference
http://www.ruby-doc.org/stdlib/
Ruby Core Reference
http://www.ruby-lang.org/en/documentation/
Ruby Learning tutorials - Excellent tutorials that include code samples that are ready to run.
http://rubylearning.com/satishtalim/tutorial.html
