The repository (http://c2.com/ppr/) publishes pattern languages and pattern related information. This site, the WikiWikiWeb, also contains a large amount of related material. If you are new here, please see WelcomeVisitors for an introduction.
Some useful StartingPoints:
- PatternLanguage
- CategoryPattern
- DesignPatterns
- CategoryAntiPattern
- CategoryGroupsOfPatterns
- SomePatternsQuestionsAnswered