Free Publication
Guys there are some nice publication. Just point your site to http://www.progress.com/realtime/products/edgextend/index.ssp , scroll down and watch in the right side. You will find Publication section. They are :
1. Data Considerations for SOAs
2. C# Offers Scalability for .NET
3. Modelling and Mapping Flexibility
4. Is .NET Ready to Challange Java and J2EE ?
5. Increasing Resilience of Database Connectivity
6. Data Access in .NET Application
7. Instinet: Electronic Brokerage Service