Hi there,
I am a passionate developer and as a matter of fact I also give lessons for a living. I have already had students over Skype and AnyDesk (remote desktop).
For this particular request, I can dedicate the time necessary for you to fully understand how to configure a web server (Apache in our case) and its virtual hosts and how to install multiple wordpress instances with their separate URLs on the same VPS.
I believe this should take 4 hours if you are completely new to server administration or less if you already have an idea about how web servers work.
I am currently in the airport waiting for my plane, I am available for chat for the next 40 minutes, then I will be online again and ready to start the lecture in 5 hours (12:30 PM UTC + 2).
Please send me a message if you wish to take this course with me.