The best is that if it offers you with an installation file. You can figure out if that is the circumstance if it ends in _theme.ocmod.zip. In that situation, all you should do is visit Extensions > Installer In case you have ever worked with a CMS ahead of, This https://www.presta-addons-modules.com/en/opencart-seo-automatic-google-rich-snippets-json-ld-integration-opengraph-twitter-tags-schemaorg.html