HTML5 is still a draft version, we can start using some of features. The problem is IE. If you can ignore IE6 there are quite few features we can use from today.
This beautiful website shows when you can use HTML5 (CSS3 and more). And also you can find html5 demos. These websites show you which browsers support which html5 features and useful links.



By Awesome Websites HQ
It is reality that there is a problem which is faced by the web designer.
I agree with you the HTML5 is still a draft version for web designs in some of features and creating a problem with IE browser. IE has really serious compatibility issues especially for web developers. Other browsers are working very well instead of it. They provide functionality and resolve most of compatibility issues.
Thanks for sharing a helpful knowledge.
By Jordan Mic
HTML 5 helps to create beautiful interactive website. Although it is difficult to code, its nature of requiring light memory gives a full compatibility with mobile devices.