We were all new to this at one time. That first step is the hardest but need not be complicated. You've already decided, alone or together, that you want to at least take a peek into the lifestyle to see if it is for you.
The next question to ask is what your comfort level is. Do you like a lifestyle bar scene or a more intimate setting or a one-on-one meeting (or two on one or two on two or whatever...lol)? One easy and less intimidating way is to simply post a picture of yourself on here and sort through the replies. Men....we know you have a dick. Women like a face picture, too. Trust me, you will get more replies to a non-dick pic. You will have lots of opportunity later to show them the that. Then it is all up to you and the people you meet. Sometime, what happens just happens and no one can instruct you on it. I can't tell you how to make the first move, although I have been notorious for getting a party started on occasion . Remember, those you are with want the same thing as you do.
I find that one of the easiest ways to signal someone that you are open to the start of some play is to simply sit closer to the them and place a hand on theirs or on their thigh. It is amazing to feel a person relax under your touch, which signals they are open to slightly more. If you are part of a couple, the excitement at seeing your partner initiate the play can make it easier for them to start in as well. Soon it becomes contagious and, well, things start to heat up pretty fast!
Don't be afraid. This is the most fun you will ever have! I look back on my 15 years of swinging (yes, I still like calling it that) as some of the best of my life.
As always, No Means No. But you will more likely be saying plenty of "Yes.Yes.Yes" (along with a lot of "Oh, god"!)