HTML5

(1)

http://www.html5rocks.com/

．Interactive presentation

．Code playground

．Samples studio

．Step by step tutorials

 

(2)

http://diveintohtml5.org/

．A free E-book about HTML5

 

(3)

http://html5test.com/

．Test your browser scores about HTML5

 

(4)

http://code.google.com/speed/

．Let's make the web faster