Hi Muneeswaran,
In my humble opinion, the use of Ajax4JSF isn't needed any more. I think you'll be better of by using components that have AJAX functionality embedded. Take a look at the
MyFaces Trinidad component set for example. They already have AJAX embedded in the components.
That set, most component sets (Trinidad included) have their own "form" component. The best thing to do is to choose a single component set for your project and use that set for everything. Then you can use that component set's form component on all your pages.
I hope this will help you with your first steps on the JSF path.
Best regards,
Bart Kummel