How do girls masturbate?

You tell your BF: "Baby, I need head". If he's so "knowledgeable" about sex, he'll know what you need. Let him lick you from stem to stern. Forget about masturbating, you should get what every girl really wants: tongue.

For one thing I wouldn't ask him does he know you are a virgin, and he probably won't believe you have never fingered yourself before. But from what I know just get yourself wet, rub your clitoris, and then start putting one finger in there, and rub your g-spot but it might hurt at first because there is a membrane there that isn't broken yet so be careful, then come out and rub the clitoris again and repeat it in different motions so that it stimulates you more

Vibrator, clitoral stimulation.

I use a vibrator
you can insert it into your vagina or just have it pleasure your clitoris
both feel good