A wiki (means “fast” in Hawaiian) is a community-oriented website that anyone browsing can also edit or modify. One of the best-known wiki on the web is the online encyclopedia, Wikipedia. Wikis are useful and also helpful for collaboration and project management purposes.
So how to start your own wiki? Like a blog or other kinds of websites, there are two main ways to start a wiki: you can use a software-and-hosting service on the web or you can set up the necessary software on your own web server.
You can set up your own wiki from some free sites such as Wikispaces and Wiki.com. These sites will guide you step by step of setting up your wiki and there are very useful for beginners.