You've come to a good place. We have thousands, if not tens of thousands, of gay men and women as clients and customers. Most of our members would be supportive of you; the others, I hope, would have the decency to keep hushed.
Of all the Paraliminals, Belief is probably the most useful. At least that is what many have told me.
It supports that you are able to live in this world as a gay man and will be able to develop a strong, lasting relationship with another man. Since the world you must live into is different than the world you grew up expecting, Belief can be a great ally.
Anxiety-Free will help quell any anxieties and fears, and help you project strength. This is very useful when telling people you are gay. So is Self-Esteem Supercharger (which is also good when things don't go as well as you would have liked).
New History Generator can help clean up things from the past, especially any less than favorable comments friends and family may have made about gay people. It can also help with any memories of people calling you sissy, fag, etc.
Sidis is right that coming out as a homosexual is no big deal, if it wasn't for all of the other messages you may have received through your life. Some of the messages are positive that may have prepared a straight kid for a picket fence, wife, two kids, and Rover--those can frustrate and confuse a gay kid trying to navigate through his teens. And some of the messages are hurtful, and their is no need to go into them here.
Personal Celebration is also very, very supportive.
And, practicing Spring Forest Qigong will help build your energy for protection as well as living powerfully in the world.