Before installing Minecraft Forge, make sure you are using Minecraft Java Edition. Minecraft Forge is on PC / Mac only, and to install it you need to: 1. Choose the right Minecraft Forge download 2. Download Java (if needed) 3. Install Forge in Minecraft Click on any of the steps or scroll down for more information. Otherwise, the first thing you need to do is head to the Minecraft Forge download page where you'll be able to, obviously, download Forge and get started. Let's run through the full steps in more detail.