The equivalent book is "Head First
Servlets and
JSP: Passing the Sun Certified Web Component Developer Exam (SCWCD) (Paperback)" by Bryan Basham, Kathy Sierra, Bert Bates. On an average I know ppl take about 3 months of preparation...but it depends on how much experience you have in JSP/Servlets.
[ January 08, 2006: Message edited by: Vin Ram ]