I was 13 and had been into puberty for about a year. One day at school some guys were talking about how great j/o was. I had heard about masturbation but had never yet tried it, although I had been having wet dreams for a few months.
I listened carefully and gathered that a guy somehow 'played' with his stiff dick - it felt good and then some stuff came out.
After school I walked home with my best friend. He had also been listening to the discussion and we talked about masturbation as we walked along. It seemed that he had never tried it yet either, so he suggested that we try it at his house (he had the house to himself in the afternoon).
We went up to his bedroom and we both dropped our trousers, but we were both a bit vague as to how to 'play' with our dicks. Well we held them and shook them a bit and we were soon both erect. I was about 4 inches then but my friend was quite a bit bigger - at least 5 inches and with more hair than I had. Then he suggested that we held each others dicks. This felt good, but it was still a long time before we started using the pump action. It must have been after about an hour that my friend said that something was happening - he shot out about 3 or 4 wads. This made me extra horny and within minutes I followed with my first ejaculation by masturbation.
Needless to say we continued our investigations every day and soon became as expert at j/o as all our other friends.