Ok. I think I finally got it. Took hours of searching. But here is how I did it:
S3>contacts> I=I (button on the bottom left)> Import/Export> Export to USB storage>OK
Connect the S3 to my laptop (windows). Search the connected phone from my laptop for ".vcf"
Drag .vcf to my laptop.
Plug Nexus into laptop.
On Nexus:
Drag down top and touch notification that says "USB for charging"
Select "File Transfers"
Open Nexus on laptop, open "download"
Drag .vcf from laptop to download folder
On nexus
Go to settings, download.
Open vcf.
Wait for it to put it all on nexus.
Not sure if it got my ringtones. But it got every number, every pic/avatar thing, every note (I like to put comments on who it is sometimes, or what each number is specifically).