For about $100/year, you get a 1-year license for personal, non-commercial projects. While not free, it's highly affordable for learning and hobbyist use.
: Improvements allow analysis information to be saved directly with the generated layer, making it easier to rerun tasks. ArcGIS Online Recommendation : Since ArcGIS 10.6 is retired, consider download arcgis 106 free
Sign up for a Free 60-Day Trial through the Esri website. For about $100/year, you get a 1-year license