We have over 5 years of experience between us (and I've got over 15 years on my own) The main thing I'd say is communication, communication and communication. You both need to be absolutely clear in your communication with each other no matter what it is.
We're on FAB and these days it's anything but. There are an awful lot of time wasters on there these days... Try Social Swinging. It's fairly new so there aren't a huge number of people, but it's a much much better site. Prepare to have your time wasted by couples and single women (especially single women...) Single guys will constantly wink/message you unless you change your filters to stop them.
Can I just say - a guy who wants to see his lady with another woman... How original ![](upload://5BDs2y1gm13l2R58ovmAMxyNM3f.gif)! I jest of course! I've experienced this through us meeting couples. All I can say is prepare yourself.
Equality is important. You (naturally) want to see your lady with another woman - how would you feel if she suddenly turned around and said she wanted another man? We've experienced this. From my perspective I was absolutely fine with it - and an MMF is something we continue to do. That being said, the first few times it was very weird seeing someone else penetrating my GF. Not in an uncomfortable way.
I'd agree with you that clubs are the best way for newbies to go. You can check out the scene and, in a good club, you'll never be pressured to play. (It's called 'playing' just FYI.) Additionally, you may be invited to join a couple.
The single woman to join you. In the scene, they are known as unicorns - and with good reason. A single woman is very hard to come by. We've been trying for an MFF for 5 years now. So far - nada. We've met a lot of woman who claim to be experienced and bi, but you soon find out they're like the idea but the reality scares the bejesus out of them. If you speak to one on FAB and arrange to meet in a club, be prepared for her to arrive with a FWB or FB she's not mentioned to you. Then be prepared to not get close to her because he's possessive...
Rules shall be broken. Prepare yourself for that as best you can. My last swinging ex and I had a rule that we would never full-swap. In Atlantis one night, a guy was playing with her and she was enjoying it more than either of us expected. In the end, we had our first MMF. We broke our own rules. It was fantastic! Swinging is a very fluid thing, so don't expect your set of rules to remain constant.
I usually structure my replies more, but it's now nearly 1am and Grammarly (a browser plugin) keeps telling me I can't spell.
We have our very first MFF meet soon (hopefully) If it happens, I'll return to provide advice on what to expect!
Good luck!