Understand how Grails integrates with Groovy, Spring, Hibernate, and other JVM technologies, and learn how to create and use plugins to augment your application’s functionality. Once you know how Grails adds behavior by convention, you can solve problems more easily and develop applications more intuitively.
Burt Beckwith has been a software developer for 15 years, most of that as a JVM developer, and for the last four years working with Grails and Groovy. He is a core developer on the Grails team at SpringSource, and has created over 35 Grails plugins. Burt is a frequent speaker at conferences and user groups where he shares his passion for Grails and other Groovy-based technologies, in particular those that are related to persistence, security, and performance. He blogs at http://burtbeckwith.com/blog/.