I would recommend [link|http://www.amazon.com/exec/obidos/ASIN/0130893404/qid=996592987/sr=2-1/ref=aps_sr_b_1_1/104-6327119-3274323|Marty Hall's Core Servlets and JavaServer Pages].

I read the nutshell book you have, read this book and then read the O'Reilly Java Enterprise book and felt pretty comfortable doing EJB development afterwards.


HTH,
-Jason