So I downloaded the Nexus Mod Manager and downloaded a few mods. None of them are working though and I never enabeled the beta thing on Steam to get the update. Any idea what I'm doing wrong?
You need to edit the fallout.ini files properly to get them to actually work when you install them with NMM or any other mod manager.
From:
Fallout 4 Mod Installation - Nexus Wiki
How to enable modding
Navigate to your Fallout 4 Folder at the following location "Documents/My Games/Fallout 4"
Within this folder will be a number of .ini files, highlight "Fallout4Prefs.ini" and "Fallout4.ini".
Right Click, select Properties and ensure that these are NOT marked as read only.
Open Fallout4Prefs.ini with your favourite text editor (we use Notepad++).
Navigate to the very bottom and you will see the line [Launcher]. Directly underneath this, copy the following text:
bEnableFileSelection=1
Save and Close
Open Fallout4.ini with your favourite text editor.
Find the line that reads: sResourceDataDirsFinal=STRINGS\
Replace this with the following text:
sResourceDataDirsFinal=STRINGS\, TEXTURES\, MUSIC\, SOUND\, INTERFACE\, MESHES\, PROGRAMS\, MATERIALS\, LODSETTINGS\, VIS\, MISC\, SCRIPTS\, SHADERSFX\
Save and close...
You're ready to get modding