Hi guys as in my title I'm new to being bisexual well not new but I've never acted on it so yes I'm a virgin when it comes to being with a man but I now know it's time to take the next step just not sure how to move forward as I am still with a partner that has no idea I'm bisexual so it a discreet kind of thing.
Hi and welcome to JUB. As one who has gone down that road, I understand how you feel. You're full of urges and desires, and the next step seems to be a big step.
One first thing to consider is, what about your current relationship? What will happen if she finds out? You might want to consider what you're prepared to lose, if worst comes to worst. Or will you consider telling her about your bisexuality and see where it goes from there? In my experience, there are lots of guys who sneak around behind their wives' and partners' backs, and seem to get away with it. I'm not playing the moral superiority card - this is up to you. Just saying, if you decide to cheat on her, be very careful.
So, let's say you've considered all this, maybe you're going to be discreet or maybe you've opened up and got her permission. Where to from there? There are apps where you can find like minded guys but you need to be patient. It takes time to filter out the time wasters, and gain the trust of someone to meet you. I'll assume you most likely won't be able to host a guy in your home, so you need a venue, either a neutral location or you need to find someone who is able and willing to invite you to his place. You need a good profile. Have pictures and be willing to share them, and be honest about your inexperience.
Alternatively, there are meeting places where guys go to hang out and test their luck: adult stores with cinemas and booths, gay saunas/bathhouses, and public places with discreet spots such as forests. This type of experience might not be the best thing for a first-timer, but it's up to you. You don't have to go through with anything if you meet a guy and have a bad feeling about the situation, you can politely decline and walk away. Always be polite - it's not his fault you're not into him, and likewise, if you're turned down, it's no reflection on you.
That brings us to the next thing to consider - what do you imagine yourself doing with another man? Men get together and do all kinds of sexual things from tame to wow. There is absolutely no obligation to have anal sex, but if you think there's any chance you would do so, you should have condoms and lube. If you think you might want to receive anal (as the bottom), I highly recommend you prepare yourself for it - cleaning, and getting used to being penetrated. There's a list of excellent advice here:
https://forums.justusboys.com/threads/all-about-ass.272148/
Let me say again: if you're meeting a guy for sex, bring condoms. It's up to you of course, but this is how I see it - if your partner doesn't know, bringing home an STI is not a good way for her to find out, and frankly, putting her at risk is pretty uncool. Have a good quality lube as well from an adult store, and a small travel pack of tissues. Stick to your safe-sex game plan. Some guys will whinge and moan that they don't like condoms, or can't get hard wearing one, etc. etc. Offer them one of those tissues so they can have a good cry about it. Don't be tempted to go bareback in the heat of the moment.
Having said all this, it's perfectly fine to meet a guy for tame stuff like mutual jerk-off, just watching each other, sucking dicks, or whatever you both agree to. That's why, if you're using apps, it's a good idea to be honest and up-front in your profile and when chatting to anyone. It's good manners to be clear about what you want to do and how far you're prepared to go, so you're both not wasting each other's time if you're incompatible. If you just want to get naked and rub bodies together and he wants full-on bareback anal tied up in a sling (for example), it's best to know this while you're chatting online rather than when you're at his place and the clothes come off.
All of this I've written around the experiences of casual hookup sex. You might also be lucky enough to find a regular partner who is exploring, like you, and you can develop things at a pace that suits you both.
There are lots of things to consider, prepare for, and find the right person. But the great thing is that you've taken the first step - you've been honest with yourself and accepted your bisexuality. You have an exciting journey ahead of you. Sex with a man (or just naked activities with a man) is a whole new experience that's not like anything you've had with a woman. There's a lot of fun to be had. Take care, be careful and (if you're sneaking around) don't get caught.