After is presentation at the Arizona PHP users group meeting yesterday, Joshua Eichorn has posted the slides he presented covering Building Dynamic Web Applications with AJAX (XMLHttpRequest).

From this new weblog post: The presentation went pretty good tonight, the turnout was pretty good, lots of new faces. [...] Anyhow the slides are up take a look, any feedback would be appreciated since i'll be giving an updated version in another month or so.

It's not a bad little presentation (he even mentions that the technology is nothing new, just with a new, cheesy name), and does provide a lot of good information for those just getting into this powerful combination of Javascript and web scripting languages.