Navigate to Appearance > Theme Settings in the Admin Sidebar.

The options here are very clear:

General

Here you can add a logo or title for the Navigation. You can also specify the Footer type - its Background Type, Text and Text Color. The footer widgets can be added via the Appearance > Widgets menu where they can be put into three Footer Columns.

The Google API Key field is for the proper usage of the Google Maps throughout the Theme. Please have in mind that when creating a Google API Key you have to enable the Google Maps Geocoding API and Places API . You can find more information here.

Styling and Layout

You can style the 404 Error Page here. It can be using a custom background color or a background image. Here you can also change the Main Colors of the Theme and write Custom CSS.

WooCommerce

Here you have adjust options related to the WooCommerce plugin and its layout. You can choose to hide the Profile and Cart icons in the navigation as well as select the layout of the Shop page and the Number of Products Per Page.

Search Bar

Select where to show the Search Deals Bar as well as adjust its layout and options.

Deals

Choose how to display the External Products (Deals) and an option to change the Expired Products status to Draft. You can also adjust the default location settings for the deals.

Typography

Select the Heading, Subheading and Body fonts of your site.

WooCommerce Options

After installing the WooCommerce plugin you can adjust its settings in the WooCommerce > Settings. The only more important options are the Currency Options, found under the General Tab. There you can adjust the number of decimals and the Currency.

You can also put Category Icons for each Product Category. In the Admin Panel, Go to Products > Categories. There when you edit or create a new Category you will find the options for the Category Icon:

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Setting Up the Menu

To customize the navigation menu go to Appearance > Menus and customize it as you'll normally do on a WordPress site.

And don't forget to check the Theme Location at the bottom of the page to select where you want it to be displayed.

If you want to add additional pages to the menu like Products click on Screen Options in the upper right corner of the page and check the types that you want to appear as items for the menu navigation.

When you are done, click Save Menu.