Having easily parsed code reduces your cognitive load and makes solving problems easier. To try and help with this, [PTS93] developed the Stator library to make certain common tasks simpler to read.

Click Sketch > Verify / Compile to make sure the code is properly in there. Save the file and then attach the Arduino to your computer with the USB cable. Click File > Upload.

Programming means understanding how code interacts with actual computer hardware. If you want to get a visceral (and fun) understanding of programming, start with an Arduino.