This guide includes new exercises on map sharing and georeferencing, new datasets and scenarios, and an introduction to ArcGIS , a powerful new part of ArcGIS for Desktop. It also provides access to hundreds of live maps from the worldwide ArcGIS user community. Each big idea in the title is a chapter in the book about the ways that GIS technology can unlock your data to reveal deeper insights and a better understanding of virtually any problem with a geographic dimension. Through hands-on exercises, readers will discover,