King tries to claim that he doesn't outline and that the most important thing to him is character. this reeks of bullshit -- the kind of thing King wants people to believe. maybe it's true now, but i doubt it was true for most of his career. then again, he also talks about having no memory of writing Cujo and dealing with alcoholism for most of the 70s and early 80s. so, who knows what he thinks he did.
anyway, i can't hold all that stuff against him, but really King is not the best person to take advice from. the book mainly gives a glimpse into his early years and his writing process. for a writer though there's not really anything solid to take away from this.