Good idea?

I`m bored with my hair. I am 15, male, and have dark brown hair that is not real curly, but loose curly almost wavy. I hate my hair and some gals say they wish they had my hair, is that a good thing? Right now it is about half an inch on the sides and back and fades too the top with about 1 1/2 on top. It all curls up on the top so I just leave it. I really want to use a straightening shampoo, any advise on some good ones?. Then grow it out a bit and keep it shaggy like the emo-punk mop top. If anyone some answers to the two above questions or advise on this please tell me, and I need some pictures of the style, I don`t really have time to search for hours so pics would be greatly appreciated. Thank you in advance.