As Adam mention, take a look in here:
http://salaboy.wordpress.com/2011/01/24/announcing-jbpm5-community-training/
http://salaboy.wordpress.com/2011/02/23/drools-5-community-training-announced-roadmap/
You will find some associated source code repositories, most of them in github with examples to start with.
Greetings
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