ESRI is a large geospatial software company. They have long been the industry leaders in providing geospatial analysis software. Their products are not free. However you can enroll in free massive open online courses (MOOCs) with them and for the duration of the course have access to their software to work through the assignments.
This is by no means a comprehensive list.
If you have questions or need help with research, please contact me at firstname.lastname@example.org.
To schedule an online meeting through Webex, Zoom, or GoogleMeet, please email me and let me know your preference.