学习Ruby

1、Learn Ruby The Hard Way

http://ruby.learncodethehardway.org/book/

Welcome to Learn Ruby the hard way. This is a translation of "Learn Python The Hard Way" to teach total beginners Ruby. It's in the same style, and the content is nearly the same, but it will teach you Ruby. 

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2、RubyGems Guides

http://guides.rubygems.org/

Learn how RubyGems works, and how to make your own.