About the best advice I can give you is to explore. Pick a time, tell your guy to just lay back and enjoy, and just explore his whole body--everybody has different erogenous zones that they like best. Tell him to tell you if something you are doing is unpleasant or uncomfortable, or just isn;t doing anything. Many of the same areas you find pleasureable on your body, your guy will, too. The nape of the neck, the ears, the nipples, just below the knee cap, the spot where the thigh meets the crotch, etc. Trust me--you will find spots on him that will make him gasp and squirm. The line of skin on the scrotum that seperates one testicle from the other is very sensitive on most guys, and a teasing swipe with the tongue can really cause a reaction. The perineum area (the area you are reffering to, I believe), the area between the rectum and the balls, actually contains the very base of the penis inside the body, as well as access to the prostate from outside of the body. Like you, I'm sure, star gently, and work slowly to increased pressure---look for any verbal and non verbal feedback from him. Hopefully, this will give you a few areas to explore, some of which he will like, some he won't, and some he will be indifferent too. THe fun is in the exploration and discovery. And finding his hot spots to be able to zero in on randomly and unexpectedly during your lovemaking. Another night, he can do the same exploration trip to you, and find areas YOU didn't know were hot for you. THe biggest sex organ is between the ears, and the whole BODY is wired in, and part, of that sex organ as well. Take a shower together, and clean each other well, beforehand--that way, you can explore with the reasonable confidence that no areas need be off limits for cleanliness reasons, leaving you more free to explore. Good luck, and have fun!