Nowadays there is a wiki site for everything. While browsing the Internet I found wikiHow, a new "collaborative writing project to build the world's largest how-to manual."
The idea is simple write a guide/tutorial for a subject that you are an expert on.
" wikiHow currently contains 18,535 articles written, edited, and maintained primarily by volunteers." If you sign you can start your own guide or edit a tutorial that someone else has started.
If you need to search other wikis use Qwika, a new search engine that searches wikis. Qwika indexes 1158 wikis in 12 languages ( German, French, Japanese, Italian, Dutch, Portuguese, Spanish, Greek, Korean, Chinese and Russian )
Qwika is also the only wiki search engine that offers machine translation of Wikia in 12 other languages so that users can search in their native language.