Cookies are pieces of information that a website transfers to your hard drive to store and sometimes track information about you. Most web browsers automatically accept cookies, but if you prefer, you should be able to change your browser to prevent that. You should read the information that came with your browser software to see how you can set up your browser to notify you when you receive a cookie, this should then give you the opportunity to decide whether to accept it. However, you may not be able to take full advantage of a website if you do so.
Cookies are specific to the server that created them and cannot be accessed by other servers, which means they cannot be used to track your movements around the web.
Website cookie acceptance
Turning cookies off