This video shows you how to easily delete cookies from your browser. First thing you have to do is open the web browser you usually use (the video shows how to delete cookies from Firefox) and go to the Options tab in the upper menu. Then choose the Clear Private Data or Clear Recent History item. In the pop-up window, check Cookies and Cache and then press the Clear Now button. The Clear Private Data/ Clear Recent History window also can be opened by pressing CTRL+SHIFT+DEL. That's it! Good Luck!
Please see "How to Clear Your Cache on Any Web Browser" for details on clearing your web cache in Firefox or other browsers..