Newbie Header Builder - Create Menu


Can someone please point me in the direction of advice and or a tutorial on Header Builder. I have searched for this info. but to no avail. After much trial & error I have managed to place a header image file but I now want to put an inline menu bar underneath. I have dragged a navigation bar underneath the logo but cannot fathom out how to enter content i.e. Home, About, Menu 1, Menu 2 etc. All I am getting on right of screen is properties, style menu, style sub menu etc