Prerequisites for Server to Server Programming in GoLang

Hello, I have started an internship and my task is to get a good understanding on server to server programming in go lang. Can you help me out in suggesting me the courses I will need to take in order to get a proper understanding in server to server programming in GoLang.

Presently, I am taking the course Google’s Go (golang) Programming language. I would like to know the prerequisites courses that will help me get a good foundation on server to server side.

Thanks in advance.