Here is a nice set of articles from Satish Talim if you want to learn Ruby from scratch. He has a new site now at RubyLearning.com , but I liked the old site much clean & easy to read.
Here is what ruby-lang.org wrote about Satish’s site:
Rubylearning.com is a thorough collection of Ruby study notes for those who are new to the language and in search of a solid introduction to Ruby’s concepts and constructs
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