Here is the list of few very useful HTML5 tags that you find new compare to earlier html tags, (this is based on the W3C HTML5 specification), and you can consider these tags are like advanced html tags.
this element is used for seeting audio file in HTML, very easy to use
Example of Audio Tags
this element is used for seeting video file in HTML page, very easy to use
Example of Video Tags
This element can be used for showing some report using this without even writing any programming code.
It specifies highlighted content on webpage, you don’t need to write any style or css class
Here is the example mark tag to highlight anything important
Example of Datalist Tags
This element is more like a ready to use css-class for Article, now you don’t need to write a separate class, simply define <article>
Example of Article Tags
Define the title of any work, This is very useful when writing long article with many title in it, you also can define CSS class on element matching with UI
Control for generating a public-private key pair, this element generates an encryption key for passing encrypted data to a server when any form is submitted.
<keygen name="key" form="form1" autofocus="autofocus">
HTML5 is very demmanding skill for Web Developer or Web Designer
Here are some of very useful html5 tags you must know