Ruby on Rails

Home for the Ruby on Rails open source Web framework. Provides an overview, downloads, bugs/patches, documentation, community and more.

https://rubyonrails.org

Ruby on Rails Guides

Free guides that can be downloaded that provide information on getting started, models, views, controllers, and more.

https://guides.rubyonrails.org

Introduction to Ruby

Codecademy tutorials provide instruction on the fundamentals of Ruby. Currently free but requires you to create an account. Practice projects and quizzes require a Pro (paid) membership.

https://www.codecademy.com/catalog/language/ruby