I've read HFEJB (done the coffee crams but I'm saving the mock exam to the very end when I feel I'm ready) and the EJB 2.0 spec. I also had EJB experience in the past as a bean provider. So I didn't have any trouble understanding the material in general, but I'm kind of overwhelmed by how much there is! My exam is a month away and I need some reassurance as to how I should study. What areas should I really focus on knowing down solid?