Make sure to first have SuperBLT, and BeardLib installed. Click the links in the dependency list.

Optional video tutorial for installing SuperBLT, BeardLib, and mod_overrides mods: https://youtu.be/rin_sjSJIkg

1. After downloading the mod, use a program such as 7zip or WinRAR to extract the main folder of the mod.
2. Move the main folder of the mod from step 1 to the Maps folder. Create the folder if necessary; BeardLib should create it automatically when launching the game with it.

IF OTHER MODS CAUSE ISSUES, USE AN EMPTY MODS FOLDER FIRST
Other mods can cause incompatibility, not every mods is going to try to make 'X' run with 'Y', so backup your mods and make a new one with only the base mods (SBLT & Beardlib) and see if it works.