Many people probably don’t know what arctoolbox has to offer. All these tools are available for use in modelbuilder(with appropriate license).
This link says quick reference guide but it is 220 pages, with a really good index and license appendix. Please review and share with the group or groups if you feel it is appropriate. http://webhelp.esri.com/arcgisdesktop/9.3/pdf/Geoprocessing_Quick_Guide.pdf