Works do not earn salvation. Many religions advocate this as a necessity for salvation. There is no 'good news'. We can do good by becoming children of God. We do not become children of God by doing good.
Truth is more important than techniques.
Let's not be too excited about too many 'How to' books. There is only one step to be taken in order to find peace with God. Just accept Jesus as your Lord and saviour. There is no other gospel, no other method for all mankind to be saved.