Review drafts of GlassFish documentation
The GlassFish documentation set has many books to help users understand how to use and manage the server. Many of those documents are now on the GlassFish project in draft form. The Developer's Guide, Application Deployment Guide and the Troubleshooting Guide are just a few. See the documentation page for the full list of documents now available and how to participate.
The docs are in an unfinished state and in some cases have missing sections however, because they are based on the previous version of the application server there is quite alot of content.
All feedback is welcome and specifically we'd love to get simple examples to add to the docs.