It’s a silly world, and a gay adult coming out, punches it right on the nose. This can be problematic.
Coming out problems are not insurmountable, just problematic as they challenge religious, social, and cultural mainstream ideologies. The result of this is generally confusion.
Friends and family will say they understand, but whether they actually do or not is a moot point. They more than likely do understand, but will they ever be accepting? During your “coming out” period, they may even behave in a more camp fashion than you do, in a misguided attempt to make you feel comfortable, so they are going to have to be gently nurtured.
People are actually silly too and when you come out they are afraid, in fact more than afraid, terrified! You on the other hand, have taken a very brave step. You have started on a journey that defines the rest of your life. Many men may never dare to do this, so you respect yourself for your bravery, you are the hero in this tale.
In-place social structures may demand that you deliberately behave in a “queer” fashion, because this is what it means to be gay. This is not actually so. Being camp is not a pre-requisite for being gay. If you are more comfortable with your supposed “straight” behaviour patterns this is fine too. If being camp does not come naturally to you, so what?
If you appear to be more “straight” than you actually are, this may help when you are playing the field. Gay men often find that “butch” guys are more attractive than overtly camp guys. So this could definitely work in your favour. The main idea, is to just be yourself, but do this tactfully around your nearest and dearest.
Nothing can be done to change the fact that you are gay, you were made this way, by god, or whatever. You have to live with this truth, and nothing can change it.
There is inevitably going to be the big philosophical question: “Why am I like this?” Having come out, you’ve probably already asked it, but now others will be asking it; and it would probably be a good idea to have a crafted and formulated answer ready to counter this seemingly aggressive approach (… Like you go around asking straight people why they are like they are?).
Always remember though, that now in most “civilized” places in this silly world, homosexuality is actually legal.
Also; find some kind of a safe and legitimate support group, there are many of them out there. Maybe get involved in the pride parades, if you so wish, but enjoy your sexuality, and you don’t have to over-subscribe to the popular culture of homosexuality.