Seth Godin is priceless. He is always giving away free advice from his blog and free books you can download, like this one called Unleashing The IdeaVirus. The best way to have your product our business succeed is having it spread like a virus. Quickly and penetrating everyone it comes in contact with. Is your new product viral? How can you make it viral? Read this book and move to the head of the class. Read this blog post for an example on how Seth got this book read by millions of people in a real life example of what he teaches you in his book.