My suggestion is that if your friends don't know about bdsm, they might not be the right people to explore it with. Although some of it is quite easy and harmless, your friends would probably not know what is, and what is not, or how to handle the urge you might feel to jump right in with both feet.

I agree with BDSM_Tourguide that it is a good idea to learn more, in here and elsewhere, before you start experimenting on your own or with other inexperienced people.

If this is really for you, at some point you might need to find some new friends who already know all about it. If people don't have that kind of inclination, it is really difficult to make it work.