First you could attend the Xtext webinar Heiko and I are giving today (at 5:00 pm GMT). There you'll learn something about the general principles and ideas behind this new language framework. We'll also show some examples.
You have to register in advance!
Second you grab the bugfix release (0.7.1) of Xtext which is due this Friday (July 17th). It includes a lot of nice bug fixes. Sebastian already blogged about it.
With that on your box you'll be well prepared to develop a nice, witty language using Xtext and submit it for the DSL contest itemis is running. Creativity wins!
