Explain how vlan works between switches?

Question

Computer networks

There are two switches connected to each other by trunk (untaged) ports and there are two computers working in the same vlan, but connected to two different switches.
The question is, how to configure the switches? On which switch do you need to make settings in order for the VLAN to work, on two or only one?
PS I know that the settings of the switch in the vlan set the port settings that will work, for example vlan 2, please explain in detail.

Answer 1

please remove the spaces in the text, otherwise nothing is clear.
on topic: read Dmitry 's answer again . Even if you've already read it, you'll still read it again.

Answer 2

Read. There is everything you need about VLAN: xgu.ru/wiki/VLAN

Answer 3

I have already sent you to the network for the smallest ones. Are you not there yet?