Project Gutenberg (www.gutenberg.org)
Offers over 50,000 free e-books
BookTrust Finder (www.booktrust.org.uk)
Great resource for finding books on a wide variety of genres.
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Reading Zone (www.readingzone.com)
Book reviews, competitions and activities for all ages.
Toppsta (www.toppsta.com)
Giveaways and hundreds of book reviews and activities for a wide range of ages.