Mastering GIS using practical approaches. Videos focus primarily on ArcGIS Pro and QGIS, but other platforms are also sometimes used. Topics range from introductory topics to advanced topics. If you would like videos made then please let me know in the comments.

Links are provided to Esri (who publish ArcGIS Pro), and QGIS. These are for information purposes only. The channel is not sponsored by either. There are many GIS available, with many targeting specific aspects. For your interest, some are given below.
Geomedia: www.hexagongeospatial.com/products/power-portfolio/geomedia
GRASS GIS: grass.osgeo.org/
gvSIG: www.gvsig.com/en
IDRISI: clarklabs.org/terrset/idrisi-gis/
Landserf: www.landserf.org/
MapInfo: www.precisely.com/product/precisely-mapinfo/mapinfo-pro
Maptitude: www.caliper.com/maptovu.htm
SAGA: www.saga-gis.org/en/index.html
Whitebox: www.whiteboxgeo.com/