I would like to install a Iron man hulkbuster mod, and i can read tutorials, but when i install everything they say on the other site, i press F4 and i have 2 menus opening, i think boths are trainers. So i refreshed my folder with the vanilla backup i had, and would like to start over.

Note, i have never modded any games, except a nintendo with ag ameshark in the 80s. Explain it to me like i'm 5 pls.