Next, click OPTION, GO, and click Library in menu bar. Meanwhile, if you have the Mac version, go to the open finder. If you are using Windows, on its open Run menu, start typing %appdata%\.minecraft\, and then choose Run. Locate the folderĪlready download the mod? Now, let’s find the application folder. As downloading the app, make sure you choose the reliable website. Today, there are a lot of websites that provide mod for Minecraft Forge. The first thing you should do is make sure the Minecraft Forge is already installed. Minecraft is ready to play! 5 Easy and Simple Steps: How to install Minecraft Mods 1.