Although I usually masturbate only one way, I have experimented quite a bit. The one I am about to tell about is possibly the best thing I have ever felt, although I have never been able to last longer than a minute while doing this particular technique. I 'll explain it in steps so that you (or your significant other) can get it right!
1)Grab your favorite lube and use desired amount on both hands and penis.
2)Make a Fist (More or less pressure depending on your desired level of pleasure)
3)Place the top of one hand on top of the penis and move your hand down in a fluid motion. Release as your hand reaches bottom.
4)As one hand reaches the bottom and as the head of your penis is about to reach the top, place the free hand on top and continue the downward motion.
5) Continue until mind-blowing orgasm!!!!
If done correctly the intense feeling should never stop until you cum. The speed depends on your level of tolerance, but take note that stimulaton of the head is more intense and thus makes your masturbatory session shorter. If that's the case, then slow down by all means.
I hope everyone enjoys! I know I do!