Are there materials on the structure of the network for ordinary users?

Question

Computer networks

Perhaps something in the form of a non-fiction book or article? For the little ones.

Answer 1

nets for the little ones

Answer 2

Kurose J., Ross K. - Computer networks. Top-Down Approach, 2016 - as an ABC, in my opinion, a very clear and successful book. Translation is also good.
Written in typical American style, with jokes and good analogies.
If you don’t like books, then try somehow to get access to the Cisco Network Academy, there is interactive material with labs and more.