http://www.incomewithadsense.com/ i am a bit wary of all these sales letter type stuff as I've gotten a lot of rubbihs before...
Jesus. If they are earning that much each month, why do they need to sell an ebook about it? Read the last ten posts over here: http://www.aojon.com/ He's spot on the money.
Before to buy it would look on the web about free content related to Adsense optimization. Some lectures are directly given by Google.
Even though $17 isn't too expensive, I still wouldn't take up on that offer. You never know what you'll get and you can't be sure if you'll get a refund!
There is no secret that you could learn from books and shits. Experience matters. Just keep on experiencing to success rather than reading books of the shit which you might already know off.. These books may help if you dont know a word about adsense. Regards, www.Magnicio.com
Never tried and never will. Even similar sites that offer free ones.. I wouldn't even bother. Honestly, there's no easy way to Adsense, hard work will reflect in your earnings.