Question for boys… at what age did you start masturbating?

I discovered masturbation when I was about 6 or 7 years old. I enjoyed playing with my cock. Got caught a few times and learned that it was something to do in my room.
When I was 10 I went to spend the weekend with this kid Dominic. When we went to bed that night he got into his bed and I was in a sleeping bag on the floor. It was too hot so I was actually lying on top of the sleeping bag. I fell asleep but got woken by Dominic who was lying next to me with his hands in my pajamas feeling my cock which was hard. I could also feel his cock poking me in the back. I was a bit shocked and asked him what he was doing, He goes “do you like it? does it feel good”? I was actually feeling great and had totally woken up. I said it was good. I rolled over on my back and gave him better access to my cock. He took my hand and put it on his and said “you can feel mine”. I could see in the nightlight that he has taken off his pajamas and his cock was smaller than mine and I followed his lead and jerked him. After doing this for a while he pulled my pj bottoms off and got between my legs and took my cock in his mouth. I had never felt anything like it. He continued but eventually positioned himself so we were in a 69. He obviously wanted me to do it back. I was having such a good time that I happily went along with it. There we were in a 69 sucking each others cocks. It wasn’t long till we both came. Notably nothing came out as we were too young but the feeling was great.
Our cocks went soft and we sat up next to each other. I asked him how he knew to do that. Dominic said his friend had done it to him at another sleepover. I asked who it was. He said William. I knew him too because we went to the same school. He said William had found out how to do it from his older cousin.
We sat for a while and soon were playing with each other again, pulling back on our foreskins and rubbing the tips of our cock on each other. It wasn’t long before we were both hard again. We watched one another jerk off for a bit and then jerked each other, and soon back in a 69. We did it till we came again. Afterwards we fell asleep and when we woke in the morning, we had another jerk off together.
When it was time to leave Dom asked his mom if I could come back the next weekend. She said sure and then he said maybe he could invite William too. His mother said it was fine. I knew in that moment what was going to happen and looked forward to it all week. And sure enough the following weekend, the three of us did a lot of masturbating and sucking together. Like many others on here, it became something we did a lot after that and also with a number of other boys. We had like a little private sex club. One time there was about ten of us out playing in the woods. One kid suggests we have a jerk off. Everyone had their pants down, cocks hard and were jerking each other off like crazy.