Hi Vishwa,
I would suggest you to go through some online tutorial on JSP and servlets. Although nothing can makeup for the hands on experience.
There are 2 very good books i would recommend to get the basics of servlets and jsp.
1) Core servlets and
Java Server Pages by Marty Hall
2) Head First JSP and Servlets by Kathy Siera
You can refer either of them. Be patient, spend some time reading it. It will cement your basics very well.
As you have cleared SCJP, if you go for SCWCD, it will help you further.
All the best.