In this chapter, we discussed what Ruby is and the popular applications that utilize the Ruby programming language. We also looked at the step-by-step approach of installing Ruby on your computer. With Ruby installed, we also acquired the tools needed to run Ruby programs and go through this book. We later extended our system's functionality and walked through how to install multiple versions of Ruby on our computers, which can be a helpful tool when working with multiple applications that require varying versions of the language.
In the next chapter, we will dive into how to work with variables in Ruby, which will give us the ability to store data and work with it in Ruby programs.
