This guide will explain how to install mods that have been made for the Minecraft Forge API. 1. Make sure you have already installed Minecraft Forge. 2. Download a Forge compatible mod from this site, or anywhere else! 3. Open Minecraft, click the ‘Mods’ button on the main menu, then click ‘Open Mods Folder’. Important: Some older versions of Forge may not have the ‘Open Mods Folder’ button. If that is the case, you need to find the folder manually.