ISBN 978-80-969533-3-2
Vikipedio is the Esperanto-language version of Wikipedia, the internet's largest on-line encyclopaedia. This handbook explains what Vikipedio is, why it's important for the Esperanto community, and how you can contribute by creating, enlarging and correcting articles. The 36-page, A6-sized booklet has a glossy colour card cover, and contains many colour illustrations and screen-shots.
Vikipedio itself can be found at http://eo.wikipedia.org/
You can watch a short film which presents and introduces Vikipedio on youtube.
Some background on the handbook can be found at vikio.ikso.net
A Wiki (on-line) version of the book can be found at eo.wikibooks.org, but since that is a Wiki version, it may have been updated so will not correspond exactly to the printed handbook's text.