These rings are so frustrating. This video is a great tutorial showing you to put it on different places on your body.
Captive bead rings are a common style of body jewelry that can be really irritating to insert and remove if you have never done it before. Just make sure you line up one of the dimples of the bead with the edge of one side of the ring, and then push the second dimple right into the ring and you have done it. Not too hard but takes a bit of practice, especially on hard to reach places that you can't see very well.
If you have any questions feel free to hit me up, I would be glad to help, and check out our website if you are interested in some awesome plugs and body jewelry.