Iwannas4

Hi my name is Stephen. I bought a a4 1996 Quattro.
I have a few questions.
The car is overheating. On the radiator reservoir there is a tube nipple that comes out of the bottom of the reservoir and it looks like there should be a hose connected to it but I cannot see hose or find the hose.
where does this hoes go?
I am ordering a new res of war plus I also need a new reservoir for the masterI cylinder.
even when the new reservoir comes in I need to figure out where that hose is and where it goes for the car will just leak antifreeze.
also would someone know where I can buy a complete manual so I can work on the car?
Thanks