Ruby

http://www.ruby-lang.org/en/

http://en.wikipedia.org/wiki/Ruby_(programming_language)

http://watir.com/ 

http://www.w3.org/TR/ruby/ 

Ruby on Rails

http://rubyonrails.org/

http://en.wikipedia.org/wiki/Ruby_on_Rails

http://guides.rubyonrails.org/

http://www.digitalmediaminute.com/article/1816/top-ruby-on-rails-tutorials

http://www.tutorialized.com/tutorials/Ruby-on-Rails/1