I think it started by 3 with me. It was electronics. OK, basically it started out as electricity. I didn't consider reading an interest.(I mean pretty much EVERYONE does that, RIGHT?) If you consider that, maybe THAT was my first. I don't read so much now, but when I was a kid, I was a VORACIOUS reader! I even subscribed to at least 3 magazines(popular mechanics, popular electronics, radio electronics), and read every one cover to cover.
And YEP, I used to do LOTS of puzzles, and none where the ridiculously simple ones either.
Steve