During the last 10 years, many libraries have transformed their young adult areas into more efficient, innovative, and inspirational spaces. Many teens have suddenly found the library warm and inviting--a place that encouraged independence, learning, socialization, and creativity. As more people learn about the positive impact of dynamic teen spaces, librarians want to know how they can make that happen in their own workplaces. This article provides a list of guidelines in making teen spaces in libraries more teen-friendly.