One more venue to ask questions on GlassFish is Chat rooms. I configured using Gaim 2.0.0 beta6 and now there. The complete archive of the chat session is available here. You need to click on << and >> (top of the page) to scroll through the dates. Alternatively, you can search the entire archive by entering a keyword.

Other that this, you can send a message to users@glassfish.dev.java.net (archive subscribe) or post a question in the GlassFish forum. If interested, you can buy paid support for Sun Java System Application Server here.

You can get yourself more familiar with GlassFish or JavaEE in general using a mix of free and paid training material.

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