Ajax Video Tutorials
Ajax Video Tutorials by Stefan Mischook (killerajax.com). He goes step by step and provides an excellent introduction to an Ajax/PHP shopping cart application.
Table of Contents:
- Part 1: Introduction to Ajax and Overview of the Ajax Shopping Cart (8:21)
- Part 2: Ajax Tools (7:38)
- Part 3: Overview of the Source Files (7:38)
- Part 4: Looking at Index.html (16:40)
- Part 5: Styles.css and Ajax.js (15:25)
- Part 6: First Look at Cart.js (7:08)
- Part 7: Searching for Products (14:50)
- Part 8: Handing the Data Returned from Product Search (18:08)
- Part 9: Displaying the Search Results (18:20)
- Part 10: Getting Product Details (14:22)
- Part 11: Add To Shopping Cart: Ajax Code (9:12)
- Part 12: Add to Shopping Cart: PHP Code (15:50)
- Part 13: Add to Shopping Cart: Handle Server Response (21:40)
- Part 14: Checkout (17:38)S
- Part 15: Adding Eye Candy with Scriptaculous (7:09)
It’s very interesting to learn any new language from a video, here in this article we have collected many ajax tutorials from youtube.com and video.google.com, enjoy 
Tutorials are covering ruby on rails, Script#, Jquery,.. and more
Script# is a C# compiler and set of frameworks that makes it possible to write Javascript and Ajax applications in C#, enabling you to benefit from compile-time type checking, error reporting, intellisense, refactoring, class browsing, doc-comments etc.
Ruby on Rails web application framework, Ajax on Rail is the support of ajax in Ruby on Rail framework
AJAX in Ruby on Rails tutorial
Components in Ruby on Rails
Ruby on Rails demo
JQuery
Script#