Learn ArcGIS allows users to develop and practice their GIS skills with guided lessons based on real-world scenarios. The Lesson Gallery includes training opportunities that cover both the desktop and online versions of ArcGIS. For lessons that use ArcGIS Online, users can sign up for a temporary account in the Learn ArcGIS organization that includes enough credits to complete all of the Learn ArcGIS lessons.
The Esri Training Catalog offers a number of instructor-led and self-paced, eLearning courses ranging from the basics to more advanced topics in ArcGIS. Many of the opportunities listed in the Esri Training Catalog are available for free.
Learn Google Earth
Learn Google Earth provides a number of tutorials for both beginners and more advanced users, allowing for further exploration of some of the main functionality of Google Earth.
Google Earth Outreach
Google Earth Outreach provides additional tutorials on a number of topics including annotating Google Earth, importing GIS data, using Spreadsheet Mapper, using Tour Builder, and more.