Electronic books offer various possibilities for expanding access as well as changing reading behavior in our life. However despite the considerable promise of e-book, e-book market was not vitalized than re expected. This study investigated the current e-book environment and suggest some guidelines for making e-books a viable part of libraries' collections and our reading life. Findings and issues about the status of the current e-book market and technologies, and some experience of libraries in the advanced countries give us a lesson for the Korean library societies.