If religious beliefs, or those of critical family members is an issue, this book will both ease your mind and shut them all up.
Jesus had very little to say on the subject and it was positive.
Old Testament equates the "sin" to eating shellfish
Appreciating ancient vernacular and custom is the key. The primary objection was to prostitution in the temples, which was mostly male. That was condemned, but not loving relations between men, which were not uncommon. Jesus hosted and welcomed a gay couple as a non issue..http://www.amazon.com/What-Bible-Really-about-Homosexuality/dp/188636009X
Otherwise, find some positive role models here. For most of us it is not even an issue, but I can recall the grief at your age. If it's any consolation, your family and probably a few of your friends already know or suspect and just want you to be happy. They'll be your vanguard when you're ready to come out. Let them take the flak and defend you until the dust settles
There are some really great coming out stories here in the archives; some that were easy...non events, and some that were traumatic cautionary tales. If in doubt...wait until you are financially independent or in school with lock tight financial funding to completion.
Just know that you can have a fucking awesome life. It's just going to be a little different than you were expecting. Once you're over the hump..so to speak, you'll be glad you're gay instead of straight.
"Joy of Gay Sex" should be a textbook. At your age, everyone is fumbling their way through, and not always well.
All the best to you and your wonderful life to be.