What is HTML5 | HTML5 Tutorial pdf

What is HTML5

=> HTML 5 is the next version of Hyper Text Markup Language(HTML4)
=> It is developing by World Wide Web consortium W3C and WHATWG.
=> HTML5 will be the new standard for HTML, XHTML, and the HTML DOM.
=> The previous version of HTML came in 1999. The web has changed a lot since then.