How to learn Ruby on Rails: a guide to resources from beginner to master

Do you want to learn Ruby on Rails but don’t know where to start? Or have some experience and would like to deepen your knowledge? Then read on.This is a guide to websites, tutorials, blogs and other media that I’ve tried and tested to take you from beginner all the way to a Ruby on Rails codebase contributor.Why learn Ruby on Rails?I’m a beginner, where do I start?Ruby on Rails in more depthThe Ruby on Rails codebase.