Wikipedia:Tip of the day/December 22, 2008
Creating a Wikipedia account has many benefits! For example, users with accounts have the ability to start new pages, edit semi-protected pages, rename pages, and upload images. Other benefits include having your own user page, a personal watchlist, and the potential to become an administrator! To create an account, all you have to do is click on the "Sign in / create account" link, click on "Create one", enter a username, a password (twice), then click the "Create account" button.
Read more: Wikipedia:Why create an account?