Step 1: Download the theme file (.zip).
Step 2: EXTRACT/UNZIP IT (if not, you can’t upload to your blog and receive the message: “The package could not be installed. The theme is missing the style.css stylesheet.”).
Step 3: After extract, you will see:
If you want use child theme see more : https://codex.wordpress.org/Child_Themes
You can install the theme one of two ways:
After uploading the theme, you must activate it. Navigate to the Appearence > Themes page to activate the theme.
Step 4: After uploaded the theme, A message appears, please Click Begin Installing plugins
Step 5: Check all plugins, select install, click Apply
Step 6: Click Return to Required Plugins Installer
Step 7: Check all plugins again, but select Activate, then click Apply.
Now you can customize the theme at your Dashboard –> Appearance –> Customize.
Crafted with love by ZThemes