You have to copy it to the following directory:
If the server`s already running look at the output console and you can see the deployment of your war-file.
If everything`s ok, you have to open your browser at:
Now you can see your JSP-files perhaps.
If you have coded a servlet, you have to got tu URL:
where servletname is the servlet-mapping-entry in your web.xml-file.
Have more fun