I also recommend Pro EJB3 - Java Persistence API, it's much better than EJB 3 in Action in JPA topics.
But for other topics, you can read EJB 3 in Action, and MZ's note.
SCJA 1.0, SCJP 1.4, SCWCD 1.4, SCBCD 1.3, SCJP 5.0, SCEA 5, SCBCD 5; OCUP - Fundamental, Intermediate and Advanced; IBM Certified Solution Designer - OOAD, vUML 2; SpringSource Certified Spring Professional