I was about 13, and id never actually been turned on before. When i did, i didnt know what exactly i was feeling (i was poorly educated on the subject, regardless of sex ed in school) so i just started rubbing myself and it progressed from there.
As far back as I can remember I've always had a fascination for all things sexual, even before I was too young to understand anything about what it was all about, so when one of the boys in my class in the first year of secondary school (age about 11 - 12) was showing off this new trick off his called 'wanking' (a word I was totally unfamiliar with) in the boys' toilets at school, as soon as I got home at the end of that day I was straight to my bedroom, stripped, laying on my back copying what I had seen him doing. Within a matter of seconds I understood why he had been making those noises of delight as I started to do the same. After a couple of minutes of frantic rubbing I was sure I was going to wet myself, but it felt so good I didn't care, and was astounded when I suddenly started squirtying the same creamy stuff I had seen my classmate produce, only I was producing far more of it, it was pumping far harder, and it was lasting much longer - so much so that I was getting worried that it might not stop. It then dawned on me why my mother had started putting hand towels by the side of my bed since I had started to, what I had thought was wetting the bed - something I learned in later years were wet dreams - she had obviously recognised the signs & prepared for the next stage accordingly. After learning about how to masturbate from watching my classmate, I soon set about showing other friends of mine how to do it. Now I know I learned from one of my peers, and I know I passed on the skills to some of my peers, so it stands to reason that others must have done likewise, yet although there are often references about how people first learned about masturbation, I can't recall ever having seen a posting from the other side of the coin about how anyone has taught anyone else.
It may sound weird, but as a teen, I never discovered masturbation. I had my first orgasm with my first girlfriend when I was 17 (ofcourse I had wet dreams before, but they never set me on the trail of giving myself a hand job), she was giving me a blow job and it was the most sensational feeling I ever experienced, seemed it started in my toes. It was only then that I started masturbating. May sound incredible, but it's the truth and nothing but the truth (so help me God).
I never had the opportunity to teach anyone else, but I learned from a classmate, simultaneously to his learning. He had seen his older bro jack off and we were in his basement looking at his bros Playboy stash. He started playing with himself like he had seen his bro (had his back to me) . Then he starts getting exciting saying Ooh, Ooh it Tickles. He got real quiet after that and I went home. That night I did it while in bed. Been doing it regularly ever since.