USGS EarthExplorer provides 1-stop shopping for U.S. and world-wide imagery (aircraft & satellite) and other data products, including contours, topos, DEM’s, lidar, etc. EarthExplorer is generally appropriate for downloading data by tiles.
USGS LCMAP Are you searching for land cover and land cover change data for a user-defined region? Then look no further. The LCMap View provides efficient data download options for regional / statewide datasets.
Farm Service Agency (FSA) National Aerial Imagery Program (NAIP) for Virginia (and beyond): NAIP is a program designed to acquire peak growing season “leaf on” imagery, and deliver this imagery to USDA County Service Centers, in order to maintain the common land unit (CLU) boundaries and assist with farm programs. The goal of NAIP is to collect 1 meter imagery for the entire conterminous United States. The imagery is either natural color or “four band” imagery and is delivered in the year of acquisition. NAIP imagery can be accessed through ArcGIS Services.
GoogleEarth Engine Is it a cloud-based data analysis tool or a catalog of satellite imagery and geospatial datasets? It is both software and data (and more…). If GE Engine is the right fit for you, then you’ll need to check out the GE Engine Tutorials as well.