Part 4 will be a re-treading of the demo that Dain showed me last week with the HelloWorld Stateless Session Bean. Part 5 will include a round-trip to the database with a dirt-simple Entity bean (a modified version of the OpenJPA helloworld example)
The purpose of this effort is to lower the barrier to entry and produce a high-quality "getting started" manual, so that more advanced tutorials and articles can be written without having to retread this ground.
I'll work on parts 4 and 5 tomorrow. At the moment, I need some Hunan chicken.