There are three options to preview your content:
Option 1: Go to Web Content > Site Map > click the 'Preview' link next to the Menu Title you want to preview
Option 1: Go to Web Content > Site Map > click the 'Preview' link next to the Menu Title you want to preview
-OR-
Option 2: From the 'Menu Content' page > click the 'Preview' link next to the content page you want to preview
-OR-
Option 3: From the 'Menu Page Content' page > click the 'Preview' button
NOTE: Be sure to save any changes you made to the page content before clicking the 'Preview' button so you can see the latest updates.