Pull back the foreskin. With one finger (or two fingers) of one hand you softly rub the frenulum, the inverted V shaped area below the head of your penis. With a finger of the other hand softly rub any one of your nipples. You can use straight or circular motion. Relax your pelvic muscles.
Focus your mind totally on the sensation. Do not think of anything else. Just experience the sensation. If you get an erection, let it happen. If you don't get an erection, don't worry. If you get pleasure, allow yourself to enjoy it. Relish it with whole heart. Don't worry if you don't get any pleasure. Don't look for pleasure or any sensation. Get rid of performance anxiety. When your muscles become tight relax them again.
At first you may nor feel any sensation at all. But be patient. After a few days practice your dick will come alive. As you practice regularly for a few months, you will fell the pleasure increasing. Finally you will come to immersed pleasure and you can go endlessly. If you have a good control over ejaculation, you can go on for hours and hours and have many orgasms without ejaculating. You will feel as if you are in heaven.
So go ahead and enjoy it. Don't forget to share this with your friends. Let more people benefit. Will bed happy to hear how you find this.