I was first introduced to the glories of self stimulation by watching a girl in our school playground. We were both about 10 or 11. It was playtime and she was pulling herself up a flagpole in the playground. Her legs were wrapped around the pole and she was thrusting up and down, rubbing her groin into the pole. It looked like she was in heaven from the expression on her face.
Sometime later I remember trying it myself. At first I did it against the foundation poles in our cellar. I would grasp a handhold, a crossbeam or something next to the pole, and hoist myself up and down with my groin pushed against the pole. Wow it felt good and I got a good workout as well.
This continued for a long time but I would always lookout for new places and things to do it with. I used to use my wardrobe door, climbing up and with my arms folded over the top of the door, bring myself off by rubbing against it. I was still only having dry orgasms at this stage.
At night I would get up and sneak out my bedroom window. We only lived a short distance from the school so I would sneak down there after dark and search the playground for places to do it. I'd try 5 or so different places before I'd let myself 'Cum'.
My first experience with ejaculation was just after such a time in the playground. It wasn't night this time. I'd been playing ball afterschool and on my way out stopped near the toilets. I saw a pole so guess what I did? Got a hardon and had to rub myself against it. I had a really powerful feeling that time I remember as I also started twisting my hips up so that the pole would rub against the underside of my balls. I walked home but noticed as I got close to the door that the front of my shorts were wet. I'd had my first ejaculation and it had soaked through. How embarrassing but wonderful all the same.