Niwot Ridge Resources
A Source of Information for Mission Critical Systems, Management Processes, and Strategies
The Patterns Languages of Program Design resource is a useful source of object concepts.
The best Patterns entry point is found at http://hillside.net/patterns.
Christopher Alexander's pattern site - patternlanguage.com
An organizational patterns index can be found at http://i44pc48.info.uni-karlsruhe.de/cgi-bin/OrgPatterns?WebIndex.
Design Patterns are repeated behaviors with positive outcomes