I first gained access to a UNIXish system in the fall of 1988, which was some SunOS4.x variant I believe. The shell was csh, the editor was vi, and I had no idea what I was doing, nor was there any help in my immediate area to be found. And no, I didn't know about 'man' yet. Somehow I discovered that 'vi' was the way to edit things, but I didn't know how to exit, so trial and error led me to pressing control and z at…
Similar experience, except a ATT 3B2 (and thus no job control). I would have read the man page, but there were none, nor were any books available. I finally just pulled the plug out of the wall. It's not much of an exaggeration to say that I became a lifelong emacs user because the start screen even back then explained how to exit.
[0] Well I might write my own emacs-inspired, ruby enabled editor one day, but that's another story.