@ampelaboi welcome on board. The easier and most "automated" is Nexus mod manager and the most complete is mod organizer. Personaly I use the first and I don't have to complain about it.
About mods, see the master thread, the yellow link in the left column, you'll find almost everything that is available here and there's a bunch. Read in my sig, "troubleshooting FNV" there are probably some tips that could help you to built your game with less...problems.
Hope you'll find what you need here, if you need help just ring
