I remember finding out about it from youtube videos like the jeep stunts, some mini city tour with hey there delilah playing, and the oddly large number of 911 attack recreation videos. I used to play the demo for hours and hours, carefully trying to build cool things within the brick limit. Eventually my older brother agreed to buy it for me, and my first day online he actually sat with me while I joined my first server since I was just a kid then. We talked to some random guy on it about what there is to do and he was super nice and helpful, and welcomed me to the game. No idea who that was, but it gave a really good first impression for the community. Good times.