Patches and updates
ESRI Software 9.3 Library - What is ArcGIS?
This book discusses the critical GIS concepts that provide the foundation for ArcGIS. The various parts of ArcGIS and the role each part plays in a GIS is also discussed. This book is designed for both the new ArcGIS user and those already familiar with the software as it explains the functions and components of ArcGIS.
Please click here for the PDF file What is ArcGIS?
Also, please note this is a large file at 17.63 MB with 130 pages of content, so there may be a delay during the dowload and display access.