Actually this thread has been made several times before, but never mind.
I discovered Naruto when I was fifteen. They had translated the manga in Dutch (the third manga to get that "honour") and my mum had bought it for me, thinking I would be interested in it.
I read it and at first I must admit that I was wondering how the hell a hyperactive, orange wearing, idiot could ever be a decent shinobi, but after a few mangas, Naruto grew on me and the storyline attracted me and voila. Naruto is now one of my top favourite mangas.