You build up your website by adding pages to it which automatically adds it to the menu.

Modules supply the information or content of the page and control how to display it.   For example, the Events module displays a list or calendar of events, the Announcements module shows news items and the HTML module shows standard text and pictures.

There are many different modules you can use but if there isn't one to do just what you want we can create a custom module to meet your exact needs.