StoryPlace: The Children's Digital Library - Listen to interactive children's stories, play with on-line activities, print out take-home activities, reading list and more. In English and Spanish. - http://www.storyplace.org/
International Children's Digital Library - Free access to high-quality digital books from around the world. Browse by age, genre, book length, character types, or even the color of a book's cover. - http://www.childrenslibrary.org/
Internet Public Library TeenSpace - Homework help by subject, tools for writing research papers, and a form for asking a reference question, as well as fun stuff including humor, trivia, a poetry wiki, urban legends, and a graphic novels guide. - http://www.ipl.org/div/teen/
Find a Library - Statistical information about public libraries in the United States organized by State and City/Town. Designed to be used by students. Find out how many books a library has, how many people visit it, and more. - http://nces.ed.gov/nceskids/tools/library/
Libweb - A global directory of library home pages. - http://lists.webjunction.org/libweb/
LibrarySpot.com - Directory of web sites, arranged by type of library. - http://www.libraryspot.com/libraries/
Guide to Library Research - Offers tips for choosing a topic, finding background information, selecting and evaluating resources, searching for information, and citing sources. From Duke University Libraries. - http://www.lib.duke.edu/libguide/home.htm
LibDex - Directory of libraries with web pages. Links to each library's home page, and to its catalog if that's on the Web too. Browse by country, or search by name. - http://www.libdex.com/