Because your visitors access and view all information through the menu clicks, it’s vitally important to get them right. This chapter walks you through using menus in Joomla!
Menus are the most important part of setting up a Joomla web site, because you use menus to display content. Menus not only control navigation but literally define how the content is laid out and presented to the user. Nothing appears on the web site without being linked to a menu item. Because your visitors access and view all information through the menu clicks, it’s vitally important to get them right. The menu modules control the placement (position) of the menu items on the site, and the menu items control the presentation and layout of the content being displayed.
Web Designing 
