This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
JSF is a standard (or at least its trying to be), so it should work well on JBoss. Remember that JBoss comes bundled with Tomcat. So, your code and WAR file should run the same on JBoss as it did on Tomcat or other JSP/Servlet containers.