The following Introductory Materials of the sequence "Introduction to GeoGebra" are available on GeoGebraTube:[list=1][*][url=https://www.geogebra.org/m/KTc2odjh]Basic Geometric Constructions[/url][br][/*][*][url=https://www.geogebra.org/m/fPYPxVRv]Algebraic Input, Commands, and Functions[/url][/*][*][url=https://www.geogebra.org/m/SoDHkCM7]Visualizing Mathematical Concepts[/url][/*][/list]

For further information please also see the [url=https://wiki.geogebra.org/en/Manual]Official GeoGebra Manual[/url].