Developing Android Apps Using Ruby

Learn Ruby The Hard Way
http://ruby.learncodethehardway.org/

Ruboto
http://ruboto.org/

Ruby Learning
http://rubylearning.com/

Ruby (base link; English)
https://www.ruby-lang.org/en/

Ruby Conferences
https://www.ruby-lang.org/en/community/conferences/

Calabash Links

Calabash Android Tutorial
http://referenceforu.blogspot.com/2013/08/calabash-android-tutorial.html

Google Groups calabash-android
https://groups.google.com/forum/#!forum/calabash-android

Linux and Windows Installation
http://knowledgestack.wordpress.com/2013/05/25/calaba-sh-automated-acceptance-test-for-mobile-apps/