Includes protocol information, FAQ, controversies, privacy information, and more.
Wikipedia: HTTP cookie
User-edited article on Web cookies covers usages, implementation, privacy issues, and misconceptions.
Persistent Client State HTTP Cookies
A general mechanism which server side connections (such as CGI scripts) can use to both store and retrieve information on the client side of the connection
AboutCookies.org: How to Control Cookies
Learn about different browser settings in order to accept or reject internet cookies for both Windows and Macintosh-based machines, like Internet Explorer 7.x, Mozilla Firefox 3.x, Safari, and Google Chrome.