The guide is effectively version agnostic. There are instructions to identify your game version as well as pointers to get compatible files regardless of previous, current or future versions.   If you want to mod the game from scratch check the patch notes for the game and see if there has been a recent update. If that's the case it's very likely this newest version isn't fully supported by mods yet. You can look into downgrading your game version to the previous stable one or waiting