Now that you have downloaded Minecraft Forge, you must install this! To do this, all you must do is navigate to the file that has been downloaded. (It will either be above your hot bar through your browser or in your Downloads folder. This step will only apply to those who just installed minecraft, though this ensures best results with our future steps, especially when visit this site downloading Minecraft Forge. Please consider packing your mods in .zip files with a propper readme , and maybe include a small .jpg where it applies.