Are you windows 8 app developer? If yes then you must know that the apps can be developed by using HTML5 CSS3 and JavaScript. If no then you should know because apps development via these techs are much more easier than C sharping and VBing. So I guess you must try developing apps via HTML5, CSS3 and JavaScript. I guess it will be easy for you when you follow the book which can be downloaded for free.
http://blogs.msdn.com/b/microsoft_press/archive/2012/10/29/free-ebook-programming-windows-8-apps-with-html-css-and-javascript.aspx
So happy coding in HTML5 and all the best for developing the apps
