I'm not sure when I first flew.... I learned lucid dreaming when I was really young. I know telekinesis was the first power I learned and teleportation was the second. Not really sure when I added flying to that. I do remember an early dream though where I flew by swimming through the air. But I also remember already having flight in some earlier dreams too. In fact I almost never use the swim through the air method it just sometimes works in the more bizarre dreams. I've realized before that a dream was a dream from gliding and then I just fly from there.... I pretty much have a core set of powers that I learned as a kid and others don't quite come as easily.