Ruby on Rails for Begineers

The two bibles of the Ruby on Rails world are

Agile Web Development with Rails—Second Edition
http://www.pragmaticprogrammer.com/titles/rails2/index.html
(Technically the second edition is not out yet. But you can buy the PDF beta)

Programming Ruby (aka The Pickaxe book)
http://www.pragmaticprogrammer.com/titles/ruby/index.html

And here are the most important links. Some tutorials may contain
outdated code and techniques though.

Rails:
http://www.rubycorner.com/
http://www.planetrubyonrails.org/
http://www.digitalmediaminute.com/article/1816/top-ruby-on-rails-tutorials
http://www.econsultant.com/web-developer/ruby-rails-tutorials/

Ruby:
http://poignantguide.net/ruby/
http://www.rubyinside.com/
http://programmingishard.com/tag/ruby
http://www.dzone.com/links/tag/ruby.html