You can go here [1] and select "Register as a developer with App Studio" - Free, and create apps to run on your own Windows Phones [1] http://developer.windows

You can go here [1] and select "Register as a developer with App Studio" - Free, and create apps to run on your own Windows Phones [1] http://developer.windowsphone.com/en-us/featured/devpreview http://developer.windowsphone.com/en-us/featured/devpreview