Please click the following link to watch GraphEdit's operation guide video series:
http://www.sciyard.com/chs/softwarevideo/index.html?type=GP&index=0
This series includes the following six instructional videos:
Basic Process of Graphic Editing
Basic Functions of Graphic Editing
Mapping Function 01 (Polygon and Layer, Scatter Point Fitting, Statistical Mapping)
Plotting Function 02 (2D Function Plotting)
Graphing Function 03 (3D Function Graphing)
Introduction to the Properties Panel of the Graphics Editor