Processing-a flexible software sketchbook and a language for learning how to code within the context of the visual arts.

Follow the link to get to the download screen: https://processing.org/download/

Select Mac OS X

Select Open when done.

Processing should be downloaded to your downloads folder. Click the processing-#.#.#-Macosx.zip file.

Click the Processing application.

Click Open when you get the following message.

Processing will open.

Click Get Started to begin.