How to reach a great orgasm?

I'm a teenager and I've been masturbating for about a week, I can get really close to an orgasm but never climax, no matter how long I do it for... I am a single virgin Plan on doing this by myself... I use a hairbrush handle and I rub my clit and it feels really good, but I want an amazing orgasm!!! I've heard of people using the tub water but my preasure is really high and I'm afraid it will hurt! Please give me the best advice!! :) be very dirty with me and descriptive, help turn me on!! ;)