In this video I explain how to download the jquery library and do a simple ajax callback to the server. On the server side we are using PHP to send back the response text to the client. Its avery simple process to send data to and from the server without a page refresh. Also by using Firebug within Firefox you can view all data, parameters which have been sent back. In shortest form, ajax is about sending and receiving data from the server without a page refresh.
