How to install New Vegas mods
Here are the three most useful tools in getting these and other mods installed properly:
The first is the Nexus Mod Manager, which makes downloading, installing, ordering, activating, and deactivating mods much easier than doing it manually. Nicely, it also works for Skyrim, Oblivion, and Fallout 3. It will also check to see if you've got the most current version of all your activated mods, and let you know if one of them has been updated. Here's a Wiki page explaining how it works. You'll also need an account at nexusmods.com (it's free).
Another important tool is the New Vegas Script Extender. Typically, more complicated mods require this. It's easy to install, and there's a readme contained within the download with full instructions.
Finally, there's the Mod Configuration Menu. This provides a settings menu for certain mods, accessible when you pause the game. Not all mods require this, but it's handy to have to adjust mod setting while in-game.
Finally, before trying to install anything, carefully read the mod description page. It will (usually) tell you how to install it, and (usually) list any other mods or files you'll need to make mods work. Keep in mind, not all mods get along with each other. If you've installed several and you're having issues, try deactivating them and then reactivating them one at a time. It can help you narrow down where the incompatibilities lie.
