You might have noticed that LearningCurve has two odd lines of gray text (10 and 21 in the last screenshots) starting with two backslashes, which were created by default with the script. These are code comments, a very powerful, if simple, tool for programmers.
In C#, there are a few ways that you can use to create comments, and Visual Studio (and other code editing applications) will often make it even easier with built-in shortcuts.
Some professionals wouldn't call commenting an essential building block of programming, but I'll have to respectfully disagree. Correctly commenting out your code with meaningful information is one of the most fundamental habits a new programmer should have.