QGIS, a free and open source geographic system

QGIS is a free and open source geographic information system for data management, analysis, and visualization. QGIS is licensed under GNU GPL.

Official website and download: https://qgis.org

Resources

Texts

• QGIS Training Manual (official tutorial)
• FOSS4G Academy Curriculum (with sources on GitHub)

Videos

• Mapping and Geospatial Visualization with QGIS (talk at NCSU CGA Geospatial Studio by Jeff Essic, 53 mins) [main resource]
• QGIS Uncovered (YouTube playlist of videos by Steven Bernard)
• QGIS Tutorials: QGIS in under 10 minutes (YouTube playlist of videos VisionZ)
• GRASS 7.2 and QGIS 2.15 Tutorials (YouTube playlist of videos by Isaac Ullah)