Check the mod’s requirements and compatibility with Viva New Vegas
Download the mod from a trusted source
Install the mod with a mod manager such as Mod Organizer 2
Place the mod in the correct load order
Install any required dependencies first
Follow the mod author’s installation instructions exactly
Use the Viva New Vegas guide to confirm it does not conflict with existing mods
Resolve any conflicts in the mod manager if needed
Run the game and test the mod
Update or remove the mod if it causes issues