So I'm 21 and have been in the lifestyle for about a year now. This isn't a post looking for play, but a simple list of tips/advice I wish someone had told me when I was first getting into the lifestyle and didn't know what I was doing or how to safely have fun in the swingers world. If you're a seasoned expert, feel free to drop advice below, but this is all just my opinion and from my own experience. I'll try and keep it short and simple:

1. ALWAYS verify. If the person you're talking to is real, they can facetime you or send pictures with a timestamp to prove it. You never know who you could actually be meeting up with.
2. If you post looking for something specific like M4F and clearly express you're a straight guy, for example, and gay/DL men (or women in the opposite case) spam your DMs and ask if you wanna play, fuck, etc. and just outright ignore your post or try to get a "straight guy to play with", just block them. If they won't even respect your requests of what you're looking for, why would they respect your wishes in person?
3. Just use common sense. Look at people's profile history. If you see a hot 21 year old girl saying F4M and it seems too good to be true, it usually is! People will upvote the post and be thirsty in the comments, but then you look at their post history and they'll be posting from NJ one day, Kansas the previous week, and California the month before.
4. More pics = more legit. Anyone can pretend to be anything online, but at least posters with photos or those who clearly indicate they're willing to verify, are more legit than just text alone
5. Chill tf out with the dick pics. Obviously don't send unsolicited dick pics, but be real here: when you scroll through this sub what else do you see besides a million M4F or M4MF posts with a dick pic. And how often do they actually lead anywhere? Save it for the DMs and stick to risky/hot/normal pics to get people's attention.
6. Last, but not least, if you're on a website like Fet and you see a post there or on here about some event going on, like a gangbang or orgy, and the cover cost is $100 for a single guy: that's insane and not worth it. You can find plently of events for cheaper. Most of the time, it's just splitting the cost of a hotel room. If you're seriously considering going to an event like a gangbang and you're so desperate you're willing to pay $80 for a few minutes with some girl, seriously think about how this may be a problem you need to think about, whether it's mentally or financially down the line.

Be safe and have fun!