The first time that I went to a gay group, it was, quite simply, a relief. Yes, you are absolutely normal. Many people are gay. Start by reading. If you feel comfortable doing so, ask the librarian in the Young Adult section of your public library.
Librarians are usually glad to help.
Moreover, librarians operate under a strict code of ethics and are legally obliged to guard the privacy of all patrons, including minors. If your public library does not have much on sexuality, the reference librarian can request good books and journal articles through interlibrary loan. Or, you may want to check out the Gay section of a large bookstore. Finally, you may want to order books and other materials through the mail. However, be aware that not all books about gay people are supportive.