The framework documentation is written for active web developers and assumes a working knowledge about how Java web applications are built. For more about the underlying nuts and bolts, see the Key Technologies Primer.
Several tutorials are available to help you get started with the framework, from all-purpose "soup to nuts" tutorials to specialty tutorials on portlets and database access.
Once you download a distribution, be sure to try the QuickStart feature.Examples
Soup to Nuts
Database
Speciality
Courseware