I progressed from holding my pecker between my thumb and forefinger when I started jacking off at 8 or 9, to single handed jacking at 12, and then to two hands at 15.
When I first started jacking off, my little pecker was only about 3 inches hard, so I formed an 'O' from my thumb and forefinger to do the trick with my hand reversed, so it was against my abdomen. I learned all about jacking from my friend Sam who was the same age as I, but had an older brother who enlightened him. He taught me, and we decided that our friend Tom was such a close buddy, we should not let him out of this great fun. That was the beginning of our weekly circle jerk which was held in our tree house behind Sam's house. I matured earlier than Sam or Tom, so I was the first to sprout pubic hair, and start jacking with my fist when I was about 12 and my pecker reached 4 inches. I also was the first to ejaculate about the same age. This made me the leader of the pack although Sam usually provided the innovations such as the use of lube, and the use of water to get off. We did this in Sam's pool when his parents and siblings weren't home. By the time I was 15, my pecker grew to 7 inches, so I could hold it with both hands when I jacked off. My two friends started calling me Stud when they first saw me do it that way. They must have also violated our rule of secrecy because the kids at school started calling me this as well including some of the girls. That led to greater fun and games which I may write about later.