So i recently got quake a few hours ago and ive been wanting to play online (quake world) for a while now but im having trouble connecting to a server, i keep getting errors such as (Not enough RAM Start application with "-heapsize 16000 (somewhere along those lines) and i havent the slightest what to do, i also downloaded nquake for it and it still doesnt work, can anyone help out with this?

First of all please say what client you are trying to use? Original one?
Make sure you are not using it.
I suggest using ezquake or nquake package. Links are available on the top of this page.

Use nquake package. What do you mean "it still does not work?" Can you as much details as possible?
We cannot see your screen from here, and most of us are not psychics.