Several guides were written to help users with Tele-Mac, the San Diego Macintosh User Group bulletin board system (BBS). In the days before the Internet and World Wide Web, computer bulletin boards allowed users to call up, via a phone line and a modem, specially configured computers, which would act much like modern web-based discussion boards. Because modems used telephone audio signals, speeds were limited. In the really old days, they supported 110 baud (equivalent to 11 characters a second), and over the years the speeds increased to 8000 baud (800 characters per second). Of course, this was under ideal conditions, and real-world performance was usually less.
Tele-Mac: A Brief Guide for New Users, December 1988.
Tele-Mac: A Brief Guide for New Users, Revised Edition, March 1990.
Tele-Mac: A Brief Guide for New Users, Second Edition, October 1990.