The Dangerous Book for Boys, by Conn and Hal Iggulden is a guidebook published by HarperCollins, aimed at boys "from eight to eighty." It covers around eighty topics, including how to build a treehouse, grow a crystal, or tell direction with a watch. Also included are famous quotes, stories, historical battles, and phrases that "every boy should know." It was published in the UK in June 2006, and reached number one in the UK non-fiction charts several times, selling over half a million copies. Conn Iggulden also published a novel entitled Wolf of the Plains about Genghis Khan, which, along with The Dangerous Book for Boys, allowed Iggulden to become the first author to reach the number one spot in both the fiction and non-fiction charts. Within the first week of its US publication on 1 May 2007, it reached number two on the Amazon best-selling book lists, being outsold only by Harry Potter and the Deathly Hallows. Other people who contributed to the success of the book include the editorial team, which consisted of Katie Espiner and Clare Hey, as well as Helen Johnstone, who won the 2007 British Book Industry Award for best publicity campaign. Source: Wikipedia (en)