We'll be using this REPL to code our Ruby
REPL: A simple, interactive computer programming environment. Stands for Read–Eval–Print Loop.
If you're interested in continuing on with your Ruby learning journey, there are a list of resources you can check out:
https://www.ruby-lang.org/en/documentation/
https://learnrubythehardway.org/book/
https://ruby.github.io/TryRuby/
https://ruby-for-beginners.rubymonstas.org/