You can also choose to display or hide the Header text.
To edit the image on the front page go to WordPress Dashboard->Slideshow and add your slides. The image that will be used is the image you set for "featured image".
Change Colors section:
The Colors section gives you full control over the color scheme in the Header, Footer, Slideshow, Features box, Sidebar, Latest News and Content.
Change Header Section:
Header – In this section you can easily add a picture for your header or even for your subheader. Your theme recommends a header size of 224 × 59 pixels.
You can also add your social links such as Facebook, LinkedIn, Twitter, Google+ or Vimeo.
Change Frontpage section:
Front page displays – The frontpage section allows you to edit all the 4 boxes, including their title, image, a short description and add a button link.
You can also change the Latest News title.
Change Footer section:
Footer displays – This section allows to add another title to your menu and as well, to let you add contact information such as a Contact Form, a Map and a Copyright section where to write your text as well.
Also, from the Appearance->Menu you can add pages to your menu that will be displayed into your footer.
Change Navigation section:
Add new Menu – Your theme supports 2 menus. Select which menu you would like to use. You can edit your menu content on the Menus screen in the Appearance section.
Static Front Page
Front page displays – Your theme supports a static front page.