Interested in learning Arcade? Esri’s Arcade Documentation was recently updated (on 11/10/2022) to be more beginner-friendly, with explanations and examples on each page of the Language features section. You can also learn more about the products that support Arcade and quickly get to Resources, including blogs that answer Arcade-related questions in depth.
For a complete description of the new Arcade Documentation, please see this blog post: https://www.esri.com/arcgis-blog/products/arcgis-online/developers/introducing-new-arcade-documentation/
Happy scripting!