For studying SCWCD, initially I started with Hanumant Deshmukh's book but my friends (Shrikant & Swapnil) suggested to buy Head First ServletsJsp book, and it was really helpful for me.. I assure you all, HFSJ is the only book needed to get a score..
Thanks to the Authers..
I completed the first reading of the book but as I was not having any experience on J2EE platform, I was unable to understand the concepts clearly.. Then while reading for Second time, I started doing Practise also which helped me offcourse.. I pointed out the important things on a notebook for all the chapters while reading (like, the DD tags needed, method names from the API, All directives & Standard Actions etc.) and before 2-3 days of the exam, it helped me to get a lookup..
I also had given Mock Exams.. If any doubts I found, I cleared those doubts @ my favourate site : www.javaranch.com..
Also there is a lot of information about DD & other concepts available in this forum.. I always had given a reading of the Posts available here, even though I was not knowing about the topic, it improveed my knowledge..
Finally I solved the Mock Exam from HFSJ, and to be honest, I got just 62% I was a bit dipressed..
Anyway, I am thankful to all the Mark, Satou & all the ranchers here for contributing their knowledge..