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
mods
CAFCW: Extract into mod_overrides. CAFCW is not required if you only plan to use vanilla weapons, but is required if you plan to use custom weapons.