Baldi's Basics Plus Modding Tutorial

This Guide teaches you to mod BB+!

BepInEx

So uhh, i don't got the download link for BepInEx but find it on github, put it in your BB+ folder (the folder when you click browse local files)
launch BB+ then alt f4 quickly!, now you got that plugins folder

Modding Part

Download a mod off gamebanana and add the DLL files into your BepInEx plugins folder.
launch the game and boom your done!

if it requires you to add extra stuff in other folders then do that