QGIS is free, open source GIS software. It “is a user friendly…Desktop GIS” and it “is an official project of the Open Source Geospatial Foundation (OSGeo)” (About QGIS).
QGIS Tutorials by Ujaval Gandhi.
If you don’t have access to a paid account, you can sign up for an ArcGIS Public Account, which is a free, limited-functionality account designed for personal, non-commercial use.
With an ArcGIS Public Account you can: “Create, store, and manage maps, scenes, layers, apps, and other geospatial content. Share content with others. Access content shared by Esri and GIS users around the world."
ArcGIS does not make the existence of these free accounts immediately evident on its main page. You can find out more about the free ArcGIS online public accounts at this link on the Esri site.
Miriam Posner’s Tutorials on Tableau:
Latitude & Longitude
Some mapping tools use decimal coordinates and others present latitude and longitude in degrees. There are many apps and websites that provide this conversion. A few examples:
Open Street Map
Open Street Map is also a useful way to find the latitude and longitude of any location. After you find your desired location on Open Street Map, use CTRL + click (on a Mac) or Right-Click (on a Windows computer), to get a pop-up menu; choose “Show Address.” This will provide the decimal version of the latitude and longitude, which you will need for many mapping tools.