In this video we cover Ruby Koans, specifically the section about constants.
If you want to learn to program, the Ruby programming language is one of the best to start with in my opinion. Ruby Koans is a way of learning in which you work through a process of getting tests to pass. At the start you have ~300 failing tests which you address one at a time. With each step, you learn about the Ruby programming language and how to operate as a software maker.
To see all the videos in this series, please visit the following Ruby programming playlist:
Ruby Koans, Learn to Code, How Programming Works, How to Program, How to Hack, Computer Programming Games, how to write ruby code, about constants, about_constants.rb