What is an Usborne Internet-linked book? An Usborne Internet-linked book contains descriptions of Web sites you can visit to take you further into the subject in a fun and informative way. To visit the sites, go to the Usborne Quicklinks Web site where you will find links to click on to take you to each site. Will the Web sites go out of date? Web sites do change from time to time, so the sites in these books will be regularly reviewed by Usborne researchers, and the links in Usborne Quicklinks will be updated. Must I have a computer to use these books? Absolutely not. These work on their own as outstanding reference books without using the internet at all.