I made a detailed Fapcraft installation guide, from setting up Java and downloading a good launcher to play Minecraft without buying it, to setting up Forge and installing the mod

Install them one by one in Minecraft, and then add these packs to any of your maps.If you have a past version of the mod, then installing a new version will not replace the previous one, the old version must be removed manually.If you have errors, write about them in the comments or in private messages. Now I am always connected.