Techno-illiteracy

I’m beginning to get a sense of what it’s like to be lost around computers.  I have a Canon AP 350 electric typewriter, no manual, and no idea what most of the settings do.  The logos aren’t clear, the operation is not intuitive to me, and when I want to do something that I assume should be trivial, like move the paper a tiny bit up or down electronically, I haven’t the foggiest how to accomplish it.