Info about narita to yokohama station

hi there!
i looked some info online and saw that there are 2 possible ways to go from narita to yokohamgastation directly.

1 is with the NEX and the other is the JR yokosuka line.

i read a lot about the next but i can't seem to find much about the jr yokosuka line.. like what stops it makes and if it really goes directly to yokohama or not. does anyone know that? and can someone advice me with one to take as i am traveling by myself for the first time with 2 luggages that are quite annoying to carry around.. i just want it to be as easy as possibly.

thank you in advance!

There are three possible ways, but only 2 are direct:

NEX or Limo Bus

There is an indirect route via local trains (Keisei and Keikyu), but it utilizes regular trains and involves 1-2 transfers along the way. Note that the Yokosuka Line does not go all the way to Narita.

More info here:

http://www.japan-guide.com/e/e2027.html

There are also direct local trains (JR).

Google tells you:)
https://www.google.co.jp/maps/dir/Yokohama+Station,+Yokohama,+Kanagawa...

Limousine bus will take you to YCAT(Yokoham International Passenger Terminal) where locates 3 mins from Yokohama Station.
The bus also brings your luggages. 85-90 mins direct service between Yokohama and Narita, 3,600 Yen for single(6,000 Yen for return valid 14 days)
http://www.ycat.co.jp/en/route/narita/narita2ycat.php

For speed/comfort, the N'Ex is the best option. The bus is slower and about the same price.

For a little more time, local trains are much cheaper.

If I have two suitcases, I will take a limo bus. If I have only one, I will take a JR NEX. If I have only one day-pack, I will take local trains, including a (less-frequent) direct Yokosuka line.