Ruby:
Homepage : http://www.ruby-lang.org
Downlaod : http://www.ruby-lang.org/en/downloads/
Documentation: http://www.ruby-lang.org/en/documentation/
Libraries: http://www.ruby-lang.org/en/libraries/
Community: http://www.ruby-lang.org/en/community/
News: http://www.ruby-lang.org/en/news/
Security: http://www.ruby-lang.org/en/security/
About Ruby: http://www.ruby-lang.org/en/about/
Documentation:
Getting Started –>
http://pine.fm/LearnToProgram/
http://www.ruby-lang.org/en/documentation/quickstart/
http://www.ruby-lang.org/en/documentation/ruby-from-other-languages/
http://www.techotopia.com/index.php/Ruby_Essentials
http://www.meshplex.org/wiki/Ruby/Ruby_on_Rails_programming_tutorials
Manual –>
http://www.ruby-doc.org/docs/ProgrammingRuby/
http://www.rubyist.net/~slagell/ruby/
http://en.wikibooks.org/wiki/Ruby_programming_language
Reference Documentation –>
http://www.ruby-doc.org/stdlib/
Further details –>
books –>
http://www.ruby-doc.org/bookstore
http://antoniocangiano.com/ruby-and-rails-recommended-books/
http://www.rubycentral.com/book/
http://www.freeprogrammingresources.com/ruby-tutorial.html
http://www.programmingbooks.org/Ruby
http://pspxworld.com/book/programming/ruby.php
http://www.sitepoint.com/books/rails1/
http://www.buildingwebapps.com/learning_rails
http://lifehacker.com/software/ruby/free-e+book-teaches-ruby-programming-225976.php
http://kickjava.com/books/ruby.htm
http://www.onlinecomputerbooks.com/free-ruby-books.php
http://www.easywebtech.com/ebooks/Free_Ruby_ebooks_Download-0.html
http://www.scribd.com/doc/1622/Free-Ruby-eBook
http://www.infoq.com/minibooks/ruby
http://www.sapphiresteel.com/The-Little-Book-Of-Ruby
http://www.rorsecurity.info/the-book/
http://www.freebooksclub.net/ruby-ebooks/
http://www.freebookcentre.net/programming-books-download/Whys-(Poignant)-Guide-to-Ruby.html
http://knowfree.net/category/it-ebooks/ruby
http://www.webstuffscan.com/2007/07/13/download-free-ruby-ebooks-pdf/
http://www.webappers.com/2007/10/07/sitepoint-giving-away-ruby-on-rails-complete-free-book/
http://www.freetechbooks.com/ruby-f49.html
http://nealenssle.com/blog/2007/01/05/free-ruby-e-book/
http://www.sapphiresteel.com/The-Book-Of-Ruby-free-in-depth
http://www.asiaing.com/mr.-neighborlys-humble-little-ruby-book-free-ebook.html
http://www.humblelittlerubybook.com/book/
http://2020ok.com/books/37/guide-to-ruby-34437.htm
http://www.bookrags.com/shortguide-ruby-in-the-smoke/
Course –>