Well, it was a while ago, but it was something unfamiliar and complicated, yet exciting at the same time. Seeing that you could send money to the other side of the globe anonymously through a system that didn't depend on banks or governments, and that had variable transaction times (depending on the fees used, or if there is a huge dump of transactions just when you send yours), was all quite different and left me puzzled. But the more I learned, the more sense it all made.