Making Fool out of Adsense

There are so many sebsite selling you different plans to generate income using adsense but how many of them are good for you to follow them. Are they really trusted, should you buy them . it just depend how you take those plans.I have always said before that there is so much information available for free then why should you buy something when you know that it may or may not work. These plans are nothing but asking to create website to earn money which you can do it yourself. Why are these people selling these plans to you, if you can earn so much money from them then why don't they make money from it, why do they need to sell it. Trust me if you get the currency printing machine will sell that to anyone. Atleast not me. I have managed to get all the important information on these website comletely free of cost which you will recieve with those programes.