In this course, you'll learn about operators, which let you assign values to variables and test the value inside those variables. We'll also explore control structures which let us control how our program runs, making our programs more efficient and intelligent. During the course, we'll be writing simple programs that build on what you've learned in this and previous courses. You don’t need to have Ruby installed on your computer to follow along. You can follow along with the course by writing code in Workspaces.