Christopher Paolini's Inheritance dragon fantasy trilogy website is at www.alagaesia.com. In addition to focusing on the forthcoming new title Brisingr out this month, you can also find out about the other books published in the series, Eragon and Eldest. Enter the realm of Alagaesia the magical world in which the stories take place. There is a newsletter to sign up for with regular updates about author Christopher Paolini, and he also answers questions sent in by readers each month on his Talking Trilogy page. The Activities section has an online fiction game, Eragon quiz and a screensaver to download. You can also discover which character you are most like and try out the audio clips in the Eragon pronunciation guide. 

Gemma Malley's futuristic novel The Declaration is at www.bloomsbury.com/thedeclaration Find out about the author's inspiration for this story set in an overcrowded world where people live far longer and are obsessed with the idea of cheating death using whatever means it takes. It is told from the viewpoint of a young girl, Anna classified as a Surplus slave who starts to question a society where youth has no place - with startling results. You can download a large extract from The Declaration and other works by Gemma Malley. There is also a question and answer page, a reader's poll about the main themes of the story and a downloadable guide for reading groups to use.

Derek Landy's Skulduggery Pleasant at www.skulduggerypleasant.co.uk Enter the world of the daring skeleton detective Skulduggery Pleasant and his assistant Valkyrie Cain formerly known as school girl Stephanie Edgley. In their second adventure Playing with Fire they do battle with the evil Baron Vengeous who has escaped from prison and is on the rampage. There are character profiles to view and print, sample extracts from both books, and wallpapers, screensavers, ringtones and interviews to download. Send a personalised Skulduggery video to your friends and discover more about author Derek Landy including an events listing page for 2008 or you can e-mail him with a question.

The beautifully drawn Spiderwick Chronicles website at www.spiderwick.com and the informative and interactive Spiderwick Chronicles film site at www.spiderwickchronicles.com have areas to delight all Spiderwick fans. The book site includes an art gallery of fantastical species, an in depth creatures information section and a large choice of downloads including a faerie knowledge quiz, masks and dolls to make and an entire board game with its own playing cards. There is also book information about the adventures of main characters Mared, Simon and Jared Grace and biographical details about author Holly Black and illustrator Tony DiTerlizzi.

The film site features a large selection of games to try including Siege on Spiderwick Mansion and Escape the Grove. Using Spiderwick's Fantastical Face Morpher you can upload your photograph and discover how you would look as a Brownie or Sprite. Using the Seeing Stone lets you unlock secret content. Explore the Field Guide or create your own version using the downloadable cover and creature templates.

Dare You Enter Tom Becker's supernatural Darkside stories at www.welcometodarkside.co.uk? The sample chapters section includes a sneak preview of the forthcoming Lifeblood, the third book in the series. On the questions page discover more about author Tom Becker, including where he gets his inspiration from and why he chose London as the backdrop to his books. Explore the Darkside map of important landmarks and glossary of places. Downloads include a choice of three spooky wallpapers. There is also a members only area which can be signed up for which gives access to additional downloads, competitions to enter, e-mail updates from the author and even more Darkside information! 

Andy Stanton's hilarious Mr Gum series is at www.egmont.co.uk/mrGum. The Books Info page features details of Mr Gum and the Power Crystals, the latest story of Mr Gums's evil but extremely funny plots and schemes. There is a Gallery to send in your drawings, book cover wallpapers to download and a News and Events area to catch up with the author's travels and visits. The Fun and Games section is bursting with things to try and do including the Lamonic Bibber Soundboard and Mr Gum's Garden Dash game. Regular competitions and Prize Draws can be entered and questions about the books sent in through the Ask Andy Stanton question section. Recommended is the amusing and informative Lamonical Chronicle newspaper which can be subscribed to so that issues are sent directly to you by e-mail!

A website devoted to Rick Riordan's fast moving adventures of Percy Jackson is at www.percyjackson.co.uk Join Percy and his friends on his quest to discover more about himself now that he knows he is the son of the sea god Poseidon, and does battle with numerous mythological foes along the way. Read an in depth Who's Who of the gods and find out what their favourite books are! Fans can send in an Ask the Gods question which the author will answer and publish on the website. There is an interactive map of the regions to explore where Percy's encounters with monsters, demons and gods have taken place. Visit the Oracle to see if your destiny is revealed. Downloads include wallpaper, video clips of interviews with major characters and a newsletter to sign up for.

Brian Selznick's intriguing Adventures of Hugo Cabret at www.theinventionofhugocabret.com tells the tale of Hugo a young clock keeper and thief living in the walls of a bustling Parisian railway station. He puts his faith in re-building a wind up mechanical toy which he believes holds the key to his happiness. Like the book this site combines elements of graphic novel, picture book and film. You can view a slide show of the drawings from the book's opening sequence. Learn more about ideas and people behind the story including the world of silent film and early film makers and automata. There are links to author interviews and Hugo Cabret sites in Italian and Spanish. Whilst the Taiwanese website includes an amazing animation featuring the drawings of the book's illustrator Remy Charlip.

Mike Wilks imaginary adventure story Mirrorscape is at www.mirrorscape.co.uk/index.asp Enter a world ruled by the Fifth Mysteries where creative talents are restricted to those who can afford them and everyone's lives are controlled. Talented artist Mel enrols as an apprentice at master painter Ambrosius Blenk's studio. With his friends Ludo and Wren he discovers how to step into paintings and enter an amazing world where nothing is what is seems...This site has a game called Pipe Pigment Pandemonium to try and downloads include a screensaver and wallpaper. You can read about the author, meet the characters and there are competitions to enter. Can you find the snail hidden in the story?

Paul Stewart and Chris Riddell's fantasy Edge Chronicles series website is at www.stewartandriddell.co.uk. Fans of the nine books (so far) in the series can read biographies of the heroes in each trilogy Quint, Rook and Twig. You can delve into illustrated profiles about some of the amazing creatures that inhabit this world including  Banderbears, Rotsuckers and Hover Worms. For those new to some of the stories, taster extracts from all the books can be read including the latest title The Lost Barkscrolls. There is a fan club to sign up to which gives you access to extra content on the site. Follow the link to the authors main website where you can find out more about them and other books they have written including the Far Flung Adventures and Barnaby Grimes.

Erin Hunter's exciting Warrior Cats series at www.warriorcats.com follows the adventures of Rusty the brave and resourceful ginger cat as he escapes life as a domestic Twoleg pet to become Fireheart the warrior cat. He joins the Thunderclan, one of many cat clans who battle for survival in the wood, but to be accepted he needs to earn the clan's respect and friendship. Fans can find out more about the different forest clans, send character e-cards, travel the woodland  to discover secret clan places, meet the author Erin Hunter and enter a games area where you can discover your clan name and try the warrior cat or kittypet quizzes based on all the books on the series. 

Meet Jimmy Coates at www.jimmycoates.co.uk who at 11 years old developed immense strength and special abilities and now finds himself pursued by the menacing NJ7 who are determined to make him work for them as an assassin. Jimmy's life on the run is full of danger and dramatic escapes against all odds. This website provides a detailed profile of Jimmy Coates and other important characters, has extracts from all the Jimmy Coates books and links to author Joe Craig's website at www.joecraig.co.uk

Phillip Reeve's extraordinary Victorian space adventure Larklight is at www.larklight.com Onboard the Larklight itself you can explore the solar realm and travel through space with Arthur (Art) Mumsby and his sister Myrtle. Read an intriguing extract from the start of the adventure or dip into Arthur's own guide to the planets and extra terrestrial colonies via the Aethernet Explorer. Use the Larklight controls to find out about the quaint customs and fascinating fauna from the farthest corners of the Empire.

Dugald Steer's fact filled Pirateology book is brought to life at www.pirateology.com This website invites you to embark on a bold adventure as you dip into the sea journal of Captain William Lubber Pirate Hunter General as he pursues the notorious Arabella Drummond across the seas. Learn about pirate customs and meet famous pirates from all over the world, look at sample pages from the Pirateology book, play the Cannons Blast Game or send an e-card. Download tasks include completing a ship's log and a nautical wordsearch.