The wonderful folks at Paleotronic (previously) have rounded up scans of articles from 1980s-era computer magazines that advised new computer users on navigating the burgeoning world of dial-up BBSes.
More outstanding paleocomputing Christmas cheer from Paleotronics (previously): a trove of 55 Christmas covers of classic computer magazines, include lamented bygones like Creative Computing.
Australia's Paleotronic is celebrating Christmas with twelve posts celebrating the best seasonal computer ads of the years between 1980 and 1992; today is day 1: 1980, in all its Coleco gloriousness. (Thanks, Gnat!)