**WARNING** THIS GAME IS FOR PC ONLY **WARNING**
Well first of all, you should get either µTorrent or BitTorrent. (But I recommend you use BitTorrent)
And then download the Fallout: New Vegas Torrent.Now you need to download and install Daemon Tools. When all of it is finished you need to Mount the .iso in the folder. Obviously you need to wait for the game to finish installing. Now you need to open the mounted folder, not the installation folder. So when you do this there should be a 'SKIDROW' folder. Inside should be 2 files. (FalloutNV ; FalloutNC Launcher). Copy them both into the installation folder. And then play the game and have fun.