I wasn't even sure if I should put this under networking or total noob.
from what I understand, the host is the computer your using, and the server is any other computer on your network.
I've got three users on my network, bruce, tanya and george
I have three computers I've named lydia, jill and bonnie.
I actually have four computers, but I'm keeping stella out of it for now
I have tanya and bruce set up as users on all three computers and george as a user on jill
I have a group set up I've called maple with each user in it. The id number is 1001