Resources

Per JQuery:

http://docs.jquery.com/Main_Page - JQuery Wiki
http://docs.jquery.com/Selectors - Selettori
http://www.visualjquery.com/ - Guida visuale
http://blog.jquery.com/ - JQuery blog

Per javascript:

http://developer.mozilla.org/en/docs/JavaScript/ - Mozilla developers

Per XPath:

http://www.w3.org/TR/xpath

JQuery plugins fighi:

http://jqueryui.com/ - JQuery user interface
http://jqueryui.com/themeroller/ - JQuery theme Roller
http://omnipotent.net/jquery.sparkline/ - JQuery Sparklines
http://acko.net/dev/farbtastic - JQuery Color picker
http://cherne.net/brian/resources/jquery.hoverIntent.html - JQuery hoverIntent
http://code.google.com/p/flot/ - JQuery Flot graph
http://gsgd.co.uk/sandbox/jquery/easing/ - JQuery Easing plugin
http://tablesorter.com/docs/ - JQuery Table sorter
http://www.malsup.com/jquery/cycle/ - JQuery Cycle plugin
http://www.malsup.com/jquery/form/ - JQuery Form plugin
http://brandonaaron.net/code - Brandon Aaron plugins - Live query
http://nettuts.com/tutorials/javascript-ajax/create-a-tabbed-interface-using-jquery/ - Net tuts
http://www.noupe.com/jquery/the-power-of-wordpress-and-jquery-30-useful-plugins-tutorials.html - Noupe wordpress and JQuery plugins
http://www.lukehowell.com/events-calendar/ - Events calendar
http://net.tutsplus.com/articles/web-roundups/20-more-excellent-ajax-effects-you-should-know/ - Nettus effects jQuery

Librerie

http://mochaui.com/demo/ - Desktop apps with mochaui
http://labs.adobe.com/technologies/spry/ - http://labs.adobe.com/technologies/spry/

JQuery PHP framework

http://jquery.hohli.com/ - http://jquery.hohli.com/

Tools:

http://getfirebug.com/ - Firebug
http://chrispederick.com/work/web-developer/ - Web developer toolbar
http://www.charlesproxy.com/ - http://www.charlesproxy.com/ - Charles web debugging proxy (controlla il traffico HTTP)

Cool stuff: