Global online learning resources
Learning materials and courses for learning GIS and using ArcGIS platforms
Learning materials on how to use Copernicus data and resources, and how they have been applied in practice
NASA program that provides training on the use of NASA Earth Science data
Webinars and video tutorials that focus mostly on the NASA Earth Science data, tools and services
The Humanitarian OpenStreetMap team offers training material for people who wish to volunteer as a part of the HOT team
FOSS technology guides
Resources on how to use open source projects and tools for geospatial tasks
Geosolutions provide comprehensive training materials for learning how to use Geoserver
The QGIS documentation page contains user guides, training manuals and gentle introductions to GIS
Tutorials, articles and examples that help to learn R and its extensions
Developers’ site for learning how to use GEE