Go to NopCommerce admin > Edit Category, Check Show on home page. You can easily group your similar products under a category, making it easy for users to scan and find the products.
Components.HomepageCategories for nopCommerce supported on version: 4.0, 4.1, 4.2
You can see the demo at the following address: http://nopdemo.com
Admin account: firstname.lastname@example.org/123456789