Installation (Manually): Place the .esp into your \Fallout 4\Data folder.  Go into your AppData folder (easiest way to do this is by pressing the Windows Button + R, then type appdata), then into the Local folder, search for Fallout4 and open it, open plugins.txt and at the very bottom  type *sthendrdrcktclear.esp (this should enable the mod).  Now you should be good to go!