Introduction - If you have any usage issues, please Google them yourself
HTML5_the_missing_manual
At first glance, you might assume that HTML5 is the fifth version of the
HTML web-page-writing language. But the real story is a whole lot messier.
HTML5 is a rebel. It was dreamt up by a loose group of freethinkers who
weren’t in charge of the official HTML standard. It allows page-writing practices
that were banned a decade ago. It spends thousands of words painstakingly telling
browser makers how to deal with markup mistakes, rather than rejecting them outright.
It finally makes video playback possible without a browser plug-in like Flash.
And it introduces an avalanche of JavaScript-fueled features that can give web pages
some of the rich, interactive capabilities of desktop software.