Hi, 

I've attached to this ticket an empty child theme. Please install and activate it and you will be ready to extend the theme.

Few words about what a child theme is:

A child theme is a theme that inherits the functionality of another theme, called the parent theme.  Child themes allow you to modify, or add to the functionality of that parent theme.  A child theme is the best, safest, and easiest way to modify an existing theme, whether you want to make a few  tiny changes or extensive changes.  Instead of modifying the theme files directly, you can create a child theme and override within.

Why use a Child Theme? If you modify an existing theme and it is updated, your changes will be lost.  With a child theme, you can update the parent theme (which might be important for security or functionality)  and still keep your changes.

Please let me know if something is not clear or if you have more questions.