Internet-linked history encyclopedias

These icons are links to social bookmarking websites where you can bookmark your favourite webpages and share them with other people. First, you need to register with one of the bookmarking sites. They’re all free, but they work in slightly different ways, so click on the icons to see which one you prefer. Once you have registered, just click on the icon at the bottom of an Usborne webpage to add it to your social bookmarks.