I am not aware of any free GIS (Geographic Information System) courses, but I know that many community colleges offer GIS courses. You should call your local community college and see if they have any offerings.
vector GIS, Raster GIS, Hybrid GIS
gis and dbms
What GIS stand for in genetics
GRASS GIS was created in 1984.
Quantum GIS was created in 2009.
GIS is basically cartography on a computer (information system). So GIS is an application of cartography.
Earning a certificate in GIS is not the same as GIS certification. Unless the certificate program you attended results in a higher degree such as a Bachelor's or Master's degree, there are no initials you can place after your name. GIS certification is a fee-based process currently handled by the GIS Certification Institute (GISCI), that evaluates the GIS proficiency of an individual by assessing their experience, education, and contributions to the GIS industry. Those individuals awarded certification by the GISCI may place the acronym GISP (for GIS professional) after their name.
GIS
TeleCAD-GIS was created in 2002-02.
SAGA GIS was created in 2004-02.
Nancy Charbeneau uses GIS (Geographic Information Systems) to analyze and visualize spatial data in her research or work. She utilizes GIS technology to map out geographic features, study spatial relationships, and make informed decisions based on the insights derived from the data. This helps her to understand patterns, trends, and correlations in geographical data for various applications such as environmental research, urban planning, or resource management.