http://blogs.msdn.com/b/joelcitizen/archive/2012/10/19/windows-8-journey-i-ve-coded-a-great-app-on-another-platform-what-can-i-do.aspx
You will always have this list of Windows 8 resources at your disposal:
- Free Trial Azure
- Download Visual Studio Express 2012
- Download Developer Center VS 2012/Win8
- Signup 30-To-Launch Win8
- Download Windows Phone SDK
- Signup 30-To-Launch Phone