Source: Obsidian Entertainment / ZeniMax
Since New Vegas is an old game with less-than-ideal stability and performance, preparing it for modding is a little more complicated than other Fallout and The Elder Scrolls games. Thankfully, the process still isn't
that time consuming or difficult.
The first thing you need is a Nexus Mods account, the website where most mods are posted. Secondly, you'll want a mod manager. These tools automatically handle most mods' installation, so you don't have to dig around in-game files — simply drag-and-drop compressed mod files, and the mod manager will do the rest. I highly recommend Vortex since it has a great UI and is very easy to use. After installing it, log in, and select New Vegas as the game you're modding. Then go to Settings > Workarounds > BSA Redirection and toggle it. This will allow New Vegas to read and accept any texture mods you install (we'll get to those later). A great tool to pair with your mod manager is the Load Order Optimization Tool, or LOOT. This program automatically reorganizes your load order to make it as stable as possible. If desired, you can override LOOT's optimization to make manual tweaks to your load order yourself (this shouldn't be necessary for the mods in this list).