A replacement guide for ArcGIS Pro (which is replacing ArcGIS Desktop 10.x) is in-progress.
Statistical and GIS software availability by lab location:
This guide is a collection of resources for working with ArcGIS 10x. In it you'll find:
What is GIS?: Definitions and examples of Geographic Information Systems terms and applications
Spatial Data: Resources for locating data for use with ArcGIS and other geospatial software, as well as a guide to relevant terminology.
Learn More: Manuals, help documentation, and user forums for ArcGIS, as well as resources available at Penn for further study.
Alternatives to ArcGIS: A selected list of software available for making maps and working with geospatial data