I'm new at this. So how can I get myself to orgasm?

I'm sorry if this is a little long, I just really need some help. I'm an 18 years old girl. I have a child. And I've never masturbated before until the last month or so. Crazy right? I guess I just felt ashamed or weird or something of doing it. I mean I'd try it for a second but then feel weird or whatever and stop without REALLY trying you know? Now that I've realized that its a very normal thing I'm trying to get more comfortable with my body. I even bought a vibrator to help but I just can't seem to get myself to orgasm. Wither its with a vibrator or my fingers I just can't do it. I can get aroused and wet. But that's it. I've tried many techniques, I've googled all over for other people's advice but nothing seems to help. Its very frustrating. I think part of my problem is that I think too much and I'm focusing too hard on having an orgasm but I'm not sure how to shut my mind off and just enjoy the experience. If anyone has any advice that'd be great. Thanks!