I've only read the first and the last page, so excuse me if I repeat advice other people have already brought up.
First I'd like to say that I think that most people underestimate how difficult of a realization and decision something like this is. Lots of society will hate you for it, and even some of the people close to you might leave you for it. But keep in mind that whenever you are pursuing anything extremely important to you, there will always be a price to pay. For something as important as self-realization, that just makes following your heart all the more important.
Unfortunately, you probably will have to deal with a lot of @$$%*!!$ like some of the other posters in this thread that try to tell you how messed up you are. Try your best not to listen to them. You are not defined by the situation you came into the world with. You are defined by who you are on the inside, and what you choose to do with your life. Don't let anyone tell you otherwise.
What you should focus on right now is education. Educate yourself about everything you can on the subject. Then try to educate the people close to you about it. This will show your serious about it, and it will help them to understand the changes in you and your life. It probably won't help with some people, but it could make a difference with others. It's always worth a try. During the process of educating yourself you will also learn a lot more about yourself. Like other people have said as well, try to find a support group of like-souls.
I don't know much about sex-change surgery, but I know that a lot of people go to Thailand for it. Regulations for who is allowed to do it at what age are less strict, the cost is lower than in Western countries, the doctors are very professional and experienced, and there are a lot of transgendered going through the same thing there.
Anyway, I hope at least something I've said helps. However you go about your self-exploration and lifestyle change, I wish you the best of luck.