What is the importance of client-side libraries? : asp.net ajax
Some of the google examples you cite don't use xml at all. Do I have to use xml and/or xslt in an ajax application?
What are the differences between ajax and javascript? : asp.net ajax
What is asp.net ajax? : asp.net ajax
What are synchronous and asynchronous ajax requests?
When do I use a synchronous versus asynchronous request?
What is the use of the scriptmanager control in ajax? : asp.net ajax
What is the asp.net ajax framework? What versions have been released so far?
What are the different controls of asp.net ajax? : asp.net ajax
Explain Ajax polling?
Should I use an http get or post for my ajax calls?
How do I handle the back and forward buttons?
How can we handle exception handling in Ajax?