Well I started masturbating when I was very young, I mean very very young. Actually my first time was in the cart at the grocery store. Luckily my parents were very open and accepting. As I started to get older I was doing different things.
I didn't really know what I was doing until I was about 13. By then I had figured out what to do for me. I would put a pair of socks in my jeans and then put a hair curler or another similarly shaped object between my legs. I don't put it inside me, just next to me. Then I sit on a corner of a blanket and pull the rest of the blanket over my legs and chest so it looks like I am just under the covers. Then I grind against the hair curler and it feels so good. It also helps if instead of moving the hair curler to grind, you hold the blanket and pull it against the hair curler in your direction. I can also pretend to just be sleeping under the covers if anyone catches me.
I recommend this technique for someone just starting out. Since I was 13 I have removed the sock from my pants and instead put in on the hair curler for a really good texture, I still wear my pants but also vary to putting the hair curler inside my pants so they push it even more onto my vag. Since it is illegal to watch porn at my age I read the stories on here and that helps a lot.
As a side note I have recently found out that when I am hot, as in temperature wise, it feels better, so I usually wear a sweater when I do it, or a sweat shirt, and socks.