What should I know about C ++ to start studying the sockets and how can I learn them?

Question

I would like to start learning the sockets in C ++ but I do not know where to start

Answer 1

I want to learn the basics, how to make a simple client-server app on Windows.

Answer 2

This video looks interesting:
https://youtu.be/NIqYwXcUdn0
second part:
https://youtu.be/WaLQ7s1X6wo

Answer 3

What exactly you want to learn about sockets? And where you want ti use it? Windows? Linux?