This tutorial guides on how to install and configure WhatACart, an open-source eCommerce platform, on Ubuntu server. The instructions include the sequential installation of Apache2 HTTP Server, MariaDB Database Server, and PHP 7.2. Subsequently, a WhatACart database is created followed by downloading and installing WhatACart from GitHub. The final steps involve configuring Apache2 for WhatACart and enabling it. Post-installation, you can use the web interface to complete the setup.