Useful information can be found at the following locations:
Application Server product information
Application Serverhttp://docs.sun.com/app/docs/coll/1310.1
Sun Java System Documentation
Sun Java System Professional Services
Sun Java System Software Products and Service
Sun Java System Software Support Services
Sun Java System Support and Knowledge Base
Sun Support and Training Services
Sun Java System Consulting and Professional Services
Sun Java System Developer Information
Sun Developer Support Services
Sun Java System Software Training
Sun Software Data Sheets
Sun Microsystems product documentation