The final step before you can start with the new theme is to create your menu, it will be really easy. If you import our demo data it will automatically make a menu for you and set it a primary location.
Let's make your own menu.
Go to "Appearance -> Menus" and you will see a panel where you can create new menus. Create one, add your created pages to it and save it. After this in "Menu Settings" below the menu select"Header Menu" and hit "Save Menu".
For One Page Menu you need to use custom links option to make one page menu. Put your section ID in the URL field and menu text goes Link Text field. Then hit Add to Menu Button.
Note: You can use up to two levels of navigation in this theme.