Shadows,
I ordered my HP book from Amazon and the mailman will be delivering it later this afternoon. So I have time to answer your question
I suppose I'm a late bloomer, I didn't come out to myself or anyone else until I was 27. Now looking back on it, I know I was gay at like 12-13, but I didn't admit it to myself until I was 27.
Once I came out to myself, I lost 60 lbs (I was fat at 215lbs, then got down to 155lbs) and over the course of the next year I came out to some of my friends, then my sister and cousins, then eventually everyone else (including the folks).
Most of them while surprised, did say they always suspected.
As others have mentioned you should come out at your own time when you feel comfortable doing so. At least you are out to yourself at this point (and you are out to all of us online ). I don't know your situation, your family, your town, etc. But I think you should hope for the best if you plan on telling anyone, but prepare for the worst.
My opinion is that you should be prepared for rejection and should only come out to your family when you are financially secure/independent. You don't want your folks kicking you out of the house or not paying for college or sending you to a camp if they don't take your gayness well.
In coming out to a friend or friends, same advise. Hope for the best and be prepared for the worst. Will your friend reject you? Will they blab?
Hopefully you will find other gay guys your age in your area that you can talk and relate too.
My coming out experience actually went well. Most of my friends and family were and are supportive. My BF comes to all the family functions and when my folks took the entire family on a cruise, there was no question that the BF would not be joining us.
Looking back on things, I wish I would have come out at least to myself and others much sooner, probably during college would have been ideal for me. There is so much I missed out on in college being closeted, including this 'guy'. I know now that he was interested back then (we laugh about it now), but at the time he didn't know I was gay, I said so many homophobic things, and he was scared I would reject him.
And for the kids and moms in the forums, cover your ears (check, make that your eyes), I wish I came out earlier because I missed being gay during my sexual prime. I never had my 'whore' phase and I could have been having regular sex with 'the guy'.
Take Care and good luck with whatever you decide,
Vic