even as you read this message, you see the links on the left of the page.
move your mouse to the green area, choose Documentation and leftclick on your mouse or let yout mother do for you.
Create a JSP page and place it in any folder but this folder should contains two more folders named:
META-INF -- it contains MANIFEST.MF
WEB-INF -- it contains web.xml
pack all jsp/html and these two folers in a war file and place thus war file in
PS. If there is any Database connectivity then you have to do something more.