Masturbation

I was still very young, and have not masturbated before. Maybe some pillow humping but no orgasms.
One night my dad was out of town for work and I heard a buzzing sound coming from my moms room. Think she thought I was asleep.
I went over and the door was open slightly. As I looked inside I saw my mom on her bed watching some porno. I looked closer and saw she was naked and had a vibrator on her pussy. Eventually I was so fascinated I did not notice her changing position then she saw me.
At 1st she was startled then smiled and said to me " well I guess your growing up and going to want to know how this works"

She invited me in and I sat on the bed as she explained sex and showed me how she rubs her clit and where her gspot was. After a while I was naked 2 and using her vibrator. Ever since until I turned 22 we masturbated together sharing her vibrator and sex stories. Even rubbed each other.