When you are ready to install a theme, you must first upload the theme files and then activate the theme itself. The theme files can be uploaded in two ways:
- FTP Upload: Using your FTP client, upload the non-zipped theme folder into the /wp-content/themes/ folder on your server.
- WordPress Upload: Navigate to Appearance -> Themes -> Add New -> Upload. Go to browse, and select the zipped theme folder. Hit “Install Now” and the theme will be uploaded and installed.
Once the theme is uploaded, you need to activate it. Go to Appearance -> Themes and activate your chosen theme.
Check this video as well
