This article recently posted on the ArcGIS blog is likely of interest to many of you (even if you don’t know it yet).
Several months back at the User Council Dan Hoffman and John Hakala presented on Arcade — here’s a quick intro exercise you can run through to begin learning and using Arcade yourself!
Using ArcGIS Arcade, a basic scripting language from Esri, you can map the values you need or create completely new data values in minutes. Within ArcGIS Online, ArcGIS Pro, ArcGIS Runtime, and ArcGIS API for JavaScript, you can create expressions for visualization, labeling, pop-ups, calculations, and aliases.
Click on the PDF for the tutorial (4 pgs): Arcadein4steps