Its simple to startup with HTML5
step1: go to the link http://html5dev-software.intel.com/
step2: click on create a new app(remember that you dont need to have any programming skills to do it)
step3: you will be given with pre designed templates and all you need is to use your creativity to select appropriate designs
step4: at the end you have to save the app u designed
step5: now you wil receive an email with a link where you download the intel html5 XDK(use chrome browser)
step6 the same email contains a username and pass word which used to login through intel html5 xdk to preview(test) the app you created in step2
step7: now you can login to your intel html5 xdk to start with new app