QGIS 2 Minute Tutorials - Accessing and Using SRTM Data in QGIS
QGIS is the leading open source geographic information systems (GIS) software. One of the the software's strengths is its ability to work with a wide range of data formats, including 30-meter elevation data from the Shuttle Radar Topography Mission (SRTM). This video uses QGIS Latest Release version 3.12.
More info on SRTM - https://www2.jpl.nasa.gov/srtm/
Interactively find SRTM data - http://dwtkns.com/srtm30m/
Earthdata login site - https://urs.earthdata.nasa.gov/home