Sign in to ArcGIS Online, a free online mapping software for students.

GIS software that is free and open-source

Open repository of U.S. Government public data. Includes geospatial data.

GIS data for the State of California.

LA County GIS data to help visualize spatial information.

List of GIS data sources found worldwide.

Tutorial gallery.

Experience what’s possible with ArcGIS Online through a curated series of tutorials.

Watch these videos to help you get started and make the most out of your ArcGIS experience.