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Take a look at http://community.jboss.org/wiki/JBossAS7UserGuide for a general, one page overview. Note some of the information there may be outdated. https://docs.jboss.org/author/display/AS7/Documentation has more details. In JBoss 7 they reworked the classloading so that the server's jars are completely divorced from your deployed application. You'll want to deploy your jar file in your artifact's lib directory war/WEB-INF/lib or ear/lib. For your data source you'll want to stick the driver jar file in your deploy directory or add it to the server's classpath (located in a folder called modules) and reference it in your standalone or domain xml files depending on your mode. Best thing to do is get your hands dirty with as much reading as you can before starting.