Where do you start when you are a virgin and horny...? I don't mean this question to be a joke...?

I'm a thirty year old virgin/med student...no kidding...I don't have time to search for a boy friend or lover...i'm not even sure that my ual feelings are what they should be..i've spent most of my life in a lab, or library...i know all that there is to know about ...accept how exactly to feel or act on those feelings...No, i'm not going to get a vibrator...I tried touching myself, but it did nothing for me...i need suggestions