Once the installation is over, you will find the Business Card Maker - Free Business Card Templates app under the 'Apps' menu of BlueStacks.
Click 'Install' to get it installed. Always make sure you download the official app only by verifying the developer's name. On the home screen, double-click the Playstore icon to open it. You will see the home screen of Bluestacks. Just be patient until it completely loads and available. It may take some time to load for the first time. Installation is as simple and easy as any other software installation. Click it and it will start the download based on your OS.