1. A method of sharing information related to passages from an electronic book, the method comprising: opening, by one or more processors, an electronic book at a user-selected initial passage, wherein the electronic book is displayed to a user on an electronic book reader; defining, by one or more processors, a passage block within the electronic book, wherein the passage block starts at the user-selected initial passage and ends at a community-selected terminal passage; determining, by one or more processors, that members of a social community who have read the passage block have input a high incidence of incorrect answers to questions about the passage block, wherein the high incidence is greater than a predetermined value; and providing, by one or more processors, additional help to the user of the electronic book, wherein the additional help is information that members of the social community have deemed to be useful in correctly answering questions that had the high incidence of incorrect answers.