Wikipedia - an encyclopedia on the Internet with free access to all publications. In addition to free entry, the site offers users to become part of a large team who will begin to supplement the existing data in the encyclopedia. Many tools are available, so anyone who is even a little familiar with typing on a computer can create their own page.
Any article can be corrected if an error is found or the specified data is not relevant. Thanks to the status of an editor for each user, Wikipedia remains the most relevant encyclopedia, where millions of corrections are made daily.