OTE: before importing the demo content, make sure you have installed & activated all required plugins from within Appearance > Install Plugins.
This theme support one click import demo content. You can make your site as same as our demo site. You need to install Required Plugins before importing demo content.
Then go to option > demo importer.
You will find this box:
All you need is just click "Import Demo" button and wait till demo imported.
It may take a several minutes. The import is around 5-10 minutes.