Questions About Masturbating

Sorry if this is a little bit weird of a question. I have never been able to masturbate without a vibrator. Not just that I can't orgasm, but it just doesn't feel good. I've looked into it, but a lot of things keep saying to "try until you figure out what feels good." But I've never been able to without my vibrator. Which sucks now that I'm in college worried about sound. 
Does anyone else have this problem? Is it something I can change or something I just gotta live with?