The page that is displayed on the program looks the same as your final web page. To create a navigation menu on the left side, you simply need to go under Navigation > Menu Bar (or Navigation Bar; both options are available and can be used) and then click and slide on the page where you want to place it. The program will automatically create the menu bar (navigation bar). To edit (add/remove items from it) simply make a double click with your left mouse button on the item. The properties windows should open allowing you to modify the item. For additioanl information and tutorials, check the Help menu or the official website.