Although it looks painful, if you have the right ones they don't hurt at all.
I don’t know how to use one... every time I check my cock doesn’t have any hands so I don’t know where to put it ?
The cock ring is the equalizer tool. Pick the right one, with a clit stimulator and bring her to orgasm while maintaining your erection. No, it does not hurt. However, I do recommend taking it off immediately afterwards because leaving it on too long in the limp mode will lead to pain.
It doesn't hurt at all, although if you're the bushy type there can be some hair pulling. Good grooming is advised - plus, as other have mentioned, while it can increase the size and girth of an erection and prolong it after orgasm, it's very important to take it off soon afterward. Falling asleep with it still in place (or otherwise leaving it on too long) can be disastrous, causing permanent tissue damage.
Orgasm while wearing it is not painful, though for some it decreases output. For me it seems to result in much more pressure and long-range cum shots (like when I was 20...) when not inside some bodily orifice.
I don't think it hurts at all...it certainly makes it far more intense when I cum and I can last a lot longer
I've used a couple of different variations of cock rings. They help me stay hard longer. But as other have cautioned always remove it when the fun is done. You can always put it back on if the need arises.
I have never had a problem cumming while wearing a cock ring, but when removing it, there is usually a lot of cum still backed-up behind the ring.
As others have said, pick the right one and it heightens the sensation and pleasure.