Tips and Techniques
Oracle Policy Modeling Best Practice Guide (March 2013)  Top Pick!
Tips for Polishing a Policy Modeling Project (Updated January 2013)
Guide to Designing a Policy Model (April 2012)

Tutorials
Tutorial - Limits, Thresholds and Preferences in OPM (Nov 2012)  New!
Tutorial - Siebel Order Line Item Validation (July 2011)
Tutorial - Interview Portlet (January 2011)
Tutorial - OPA 10.1 How to Integrate Web Services with Oracle Web Determinations (June 2010)
Tutorial - Make Decisions Using a JAX Client for OPA Determinations Server (December 2009)
Tutorial - Make Decisions Using a .NET Client for OPA Determinations Server (December 2009)
Tutorial - Make Decisions Using OPA Determinations Engine for Java (December 2009)

Whitepapers
Oracle Policy Automation on Oracle Engineered Systems (July 2012) New!
Is Oracle Policy Automation a Good Fit for My Business? (February 2013) Updated! 
Whitepaper - Oracle Policy Automation Performance and Scalability (June 2010)
Performance Whitepaper - Linear Inferencing (February 2009)