iraw·18 anni fa·discussYou should learn the basics before letting some higher-level framework do all the magic for you.There are some good articles about AJAX on the Mozilla Developer Center: http://developer.mozilla.org/en/docs/AJAXYou can begin with http://developer.mozilla.org/en/docs/AJAX:Getting_StartedYou can also find some good pointers to AJAX toolkits and examples there.
iraw·18 anni fa·discussDefinitely Gandi (http://www.gandi.net/whowe/), I've been there for almost 10 years.It's not too expensive and they have a very nice web interface to manage multiple domains (different edition modes, zone versioning system, free primary/secondary DNS). They're also hosting and helping several OpenSource projects.
There are some good articles about AJAX on the Mozilla Developer Center: http://developer.mozilla.org/en/docs/AJAX
You can begin with http://developer.mozilla.org/en/docs/AJAX:Getting_Started
You can also find some good pointers to AJAX toolkits and examples there.