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To program the Arduino you use the Arduino IDE.  It can be downloaded from Adruino.cc and works on Windows, Mac, Linux x86 and even Linux ARM.

I discuss how to change preferences such as showing line numbers, and truning on code folding.

Additionally we discuss:
-How to change Arduino Boards
-How to add libraries
-How to Auto Format the code
-Visualizing Arduino Data using Serial Monitor, and Serial Plotter