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To learn more about how to use Esri's ArcGIS software suite, online self-guided tutorials are available through the Esri Virtual Campus.
Please contact Haitao Li via e-mail to be set up with an organizational Esri account. Then you will be able to self-register for a course. Only web courses authored by Esri (top left in the catalog description) are available to us for free.
There are many online courses and tutorials to learn more. Here are a few examples: