Ajax offers a solid avenue to really add life to your web design in a multitude of ways. There are plenty of tutorials on the internet that show you how to use Ajax, so trying to find which ones are the best is a rather trying task. Here is a condensed list of some of the top Ajax tutorials on the web to help you get started.
Do you plan on having a site or sites that allow for the upload of files? Having such a feature is not a bad idea, as it allows for the sharing of content in a simplified way. This tutorial shows you how to integrate an Ajax file upload system on your site using PHP and JavaScript.
The tutorial's author admits that the security limitations of JavaScript hinder the ability to create a pure AJAX file upload system, and that most AJAX upload systems employ third party tools to get the job done. Still, this particular tutorial definitely helps you create a smooth file uploading function that works well and looks good in the process, thanks to an animated progress bar.
Facebook-like Autosuggestion with jQuery, Ajax, and PHP
Autosuggest is one of the more user-friendly features around. By offering suggestions automatically as letters are typed into a search, autosuggest makes life much easier for visitors. It can help with spelling issues, and can also help someone who is looking for a search result but does not know the subject's entire name.
Facebook has one of the more recognizable autosuggest features around, and this tutorial uses it as an example of how to create an autosuggest function using jQuery, AJAX, and PHP. The process, while very helpful, is surprisingly simple.
A calendar can fit in easily with a wide variety of websites. You may want to add a calendar to your site to display the dates of events, or if you want to enable a booking functionality for reservations and the like. This tutorial allows you to do so via an AJAX-enabled calendar control. The end result is a nifty little calendar that allows you to jump to different months and years via drop downs and more. Link: http://www.4guysfromrolla.com/articles/022008-1.aspx
Build an Ajax powered shopping cart
Online shopping is increasing in popularity, as it gives consumers a way to shop quickly and easily using their computers or other mobile devices. If you are selling items on your site, a shopping cart is an obvious necessity. This tutorial shows you how to create an AJAX powered shopping cart. In addition to PHP and jQuery, the tutorial also calls on a few plugins to bring the shopping cart to life.
AJAX & Prototype 
