The power of GIS is all about the DATA. You may be working with some original data you collect, as well as existing datasets collected by governments or other organizations. The sites listed here include some popular sources for mostly social, economic, and environmental data that have a geospatial element.
Our guide to adding your own data to an ArcGIS Online map can help you work with original data.
The provided layer packages are for use by those familiar with ArcGIS. Map applications and web maps are viewable in the browser. We recommend for you to enroll in a GIS course early on during your attendance at the colleges.