When you go to  Customize, you will see various options to customize your site. Just try those options one by one you will be able to understand how the theme works and can create any site.

Some Available options in Customizer:

• General Settings
• Header Image
• Menus
• Widgets
• Homepage Settings
• Theme Options
• Additional CSS

The Streaming-Pro Premium theme has additional features than the Streaming Free theme, which are indicated in the corresponding customization options. However, some features are same and are not described in the customizing options provided, but the customization process is same as free theme.