i started playing piano at 6 (my mother played and taught). when i rebelled at 11, they gave me a clarinet. when i rebelled at 12, they got me a guitar. i stuck with that, and spent the majority of my free time playing it (kind of like my son does these days, come to think of it).
in high school, we had a project where we could write a paper or create some kind of media project (this was the early 70's... very "modern" teacher, i suppose). well, anything but a paper, right? a couple of friends and i created a faux band called "joe shmoe and the shmoettes" and recorded them (us) on my parents' revere in my living room. that was shortly followed by a long, scripted firesign theater-like recording. that hooked me, and i spent my savings on a sony tc353d recorder, on which one could bounce back from track to track. i overdubbed guitars 'til you couldn't hear the first track much anymore.
the rest is history...