I first started playing Civ I years and years ago. (92? 91? When did it come out?)
My Civ experience is a case study in the value of software piracy: I got a copy of Civ I from a friend of mine. I immediately became obsessed with the game, and I remember one summer where I spent quite some time writing stuff down from the Civilopedia, since I didn't have any manuals to refer to.
Shortly after that summer, I completed my conversion to the Cult of Macintosh, and then I bought a legit Mac copy of Civ I, followed eventually by Civ II and III. I'm sure that Sid forgives me for my youthful indiscretion, especially since that early exposure created a customer for life.