I find http://www.newvegasnexus.com/downloads/file.php?id=38326 to be a good resource in that angle. However, by this point in the patching, New Vegas is about 37 times as stable as Fallout 3 in my personal experience.
Make absolutely certain to get the Fallout Mod Manager, though. It just makes things easier.
Oh, and don't try to do everything on your first playthrough like you could Fallout 3. Pick a form of combat, roleplay a character, and just roll up another one once you finish the game (post-ending gameplay is gone).
-Nukeknockout