As you may know, a child theme is a theme that inherits the functionality and styling of the parent theme. Using child themes are a popular way of modifying the source code of an existing theme without risks.

If you already have some experience with WordPress and decided to use FlatBook with a child theme, feel free to install the flatbook-child.zip archive from the /Theme folder of the main package, you downloaded from ThemeForest.

Note: you must first install the flatbook.zip file because that is the parent theme.