im not sure how to orgasm

Ok so im 17 and I like to masterbate at least once a day usually at nite. The thing that got me really interested in masterbation was partly this site and the book series fifty shades of grey its great if u want to get in the mood I suppose. But anyways I've only been masterbating since I was like 16 and a half and I would only do it once like every other month but I was only fingering myself cuz I thought that's all u could do. And I jus recently had my first boyfriend we r broken up now but we had sex twice and we 69 once and he ate me out once but it wasn't for very long and he wasn't good at it. I had no idea wat clitoral stimulation was until I found this site and I jus want to know if I've ever had an orgasm I've used the shower head on my four and it feels so amazing and I didn't want to stop at all but I don't think I had an orgasm cuz once I stopped I was like I didn't really do anything mabe I didn't do it for long enough. I also love to just rub my four at night before bed cuz it helps me relax a little but I share a room so its hard cuz my sisters always home so I rely a lot on shower time lol. So I jus rub my four in circle motions for like five minutes and I get to like a peek and then that's it it doesn't get better and it seems really complicated to try fingering and clitoral stimulation at the same time. If anyone has some suggestions I could try it would b greatly appreciated thank u :D