Hi there,
I'm preparing for SCBCD, as well. I'm using the Head First
EJB which I find very, very good. Preperation time - well obviously depends on your prior EJB experience and how much time and effort you put in. I was on a HelloWorld EJB level before starting with Head First and think I'd pass the
test right now - after one week of pretty intense studying. My score would probably suck though. The book itself says you'd need 3 to 10 weeks - sounds about right.
good luck
Nils