KillTheG1mp: You don't need that, using guides breaks the fun of the game and the point of discovering stuff up. Or, if you're really really stuck, there's always gamefaqs.com ;)
I agree, but there's a certain charm to browsing through the strategy guides of old games, especially if you've already played through them. I'm guessing the OP had played MM6, as he owned the strategy guide at one point.
For strategy guide nerds (I'm hardly one but would become one if I knew where to start), find a download of the Master of Magic official strategy guide. I'm sure it's not unusual for that era of gaming, but that things is a 400+ page tome detailing every last nuance of Master of Magic. It was a fun read (err, skim) for someone who hadn't even played the game.