If you are planning on running an open shell account server. I would look up joining the tildeverse as a member server.

Yeah that's a great idea! I will try to contact them. Thank you for the feedback.

I have just one question do they also provide mentorship for beginners to learn?

Yeah they do

When I read "open shell account server" I thought this meant anyone can get access programmatically. This sounded like a disaster.

But turns out, at least with the respect to this NetBSD specific offer, you have to send out an application.

Yeah a shell account is a standard term for getting a terminal access in a shared system going all the way back to mainframes.

Most universities at least in the US had a thing called a Sunsite that came with shell access sometimes.