Interested in creating websites and apps? You can learn HTML5, the standard language of the web, for free with this course from W3C (the World Wide Web Consortium), which developed HTML5.
The course runs six weeks starting in June, but you can sign up now at edX. You'll learn the new features introduced in HTML5 and how the language powers video, audio, and apps both on the desktop and mobile web.
There's an option in the edX course to get a verified certificate for a fee, but anyone else can audit the course and access all the material.
Learn HTML5 from W3C [edX]