- https://rubymonk.com/
- https://www.ruby-lang.org/en/documentation/quickstart/
- http://learnxinyminutes.com/docs/ruby/
- http://iwanttolearnruby.com/
- https://www.bloc.io/ruby-warrior#/
- http://www.codecademy.com/en/tracks/ruby
- https://www.codeschool.com/paths/ruby
Please don't run any sudo
commands to install Ruby libraries, despite what the Internet tells you.