My primary study source was Head First EJB. I did one read-through, then a second to take notes. After that, I primarily used my notes to study, but the read-through provided a solid base of understanding...it was just a matter of making the details stick.
I also used ejbcertificate.com, Mikalai Zaikin's study guide (a little), and the various cheat sheets out there....as well as LOTS and LOTS of searches on the Big Moose Saloon. THANK YOU GUYS!!!