"That's a simple example, you say, but what if you need to learn to do something your friends haven't done? Like, say, sell a book to the world's largest publisher as a first-time author? Funny you should ask. There are two approaches I used: 1. I picked one book out of dozens based on reader reviews and the fact that the authors had actually done what I wanted to do. If the task is how-to in nature, I only read accounts that are "how I did it" and autobiographical. No speculators or wannabes are worth the time. 2. Using the book to generate intelligent and specific questions, I contacted 10 of the top authors and agents in the world via e-mail and phone, with a response rate of 80%."