Amazon.com - world's largest online bookstore, selling new and used books, movies, music, and more.
Barnes and Noble - large book retailer, selling books, movies, music, and more both in stores and online.
Bartleby - provides quotations, poems, and classic fiction and nonfiction books online free of charge.
BookBrowse - online book review magazine provides information on new books, reviews, excerpts, reading lists, info for book clubs, and more.
BookSpot - find book reviews, book awards, reading lists, author and publisher information, book stores, book news, book events and more.
CliffsNotes - notes and study guides, covering literature, science, math, history, and more.
GoodReads - discover and share books on this site for readers, reviews, and book recommendations
LibraryThing - an online service to help people catalog their books easily.
Famous Quotes & Authors - find famous quotations for all occasions.
New York Review of Books - the online version of the biweekly book review and journal.
SparkNotes - study guides and notes on literature science, math, history, and more.