GeneratePress offers a fast, lightweight, powerful and responsive WordPress theme. You can download premium version of GeneratePress theme from this page. Before installing the premium version of GeneratePress theme, you need to install and activate the free version through the WordPress repository.
Although GP Premium is called as a theme, you must install GP Premium as a plugin. If you try to install it as a theme, it will not work. The addons that come with GP Premium will appear within the menu once activated.