Download the Files
After purchasing a theme on ThemeForest, go to Downloads page in your profile.
Locate the theme in the downloads list, and click link #2.
Extract the downloaded archive, inside you will see two files: "theme_name.zip" and "theme_name-child.zip".
Install the Theme
First, install the "theme_name.zip", then install and activate "theme_name-child.zip". It's important that you activate a child theme. It allow you to avoid problems with theme customization and updates in future.
Install Required and Recommended Plugins
After theme installation, please follow the message asking you to install and activate the plugins. Follow the plugin initial setup process, like in case with WooCommerce.
After these steps finished, you can start importing demo data.