Wikimedia has announced that you can now create free, custom encyclopaedias from Wikipedia articles by rolling them all up into a single ebook that you carry with you wherever you go.
It's not a difficult process: click the "Create a book" link located in Wikipedia's left sidebar, collate the articles you want to include (you can include complete categories, which makes great sense), and then export it as a PDF or EPUB file. There's a little video tutorial you can watch if you need more help but don't worry: it's really easy.
While the idea of offline Wikipedia sounds a bit weird, it's a great solution for researching topics when you're off-grid, or perhaps as a way to keep a reference guide to hand when you're out in the field. What will feature in your custom encyclopaedia? [Wikimedia via The Next Web]