No offence, but you are going to get no-where with any attempts at trying to seize money from him that he has acquired from leaking your "guide", and a lawyer would most likely laugh in your face.
Not trying to be mean, just blunt, you'd be wasting your own time and money. And its very hard to copyright information, it is not intellectual property in my mind, it is just knowledge of a virtual game, and we all know how low your chances are of winning a claim regarding virtual content in a lawsuit.
And even if you did succeed, you would what, maybe get $5 off him he's gotten in advertisement revenue? when your lawyer probably cost $1000.
P.S
How could you even prove your guide was your copyright... this thread just sounds like your mad because nobody is buying something that quite evidently is elsewhere on the internet for free.