I am learning how to develop Windows 8 Metro style apps but i couldn\'t found a way to store user data in SQL Server for example.
What could i use or how to store user d
You cannot access local "desktop services" from the Metro app. So you will not be able to communicate with a local SQL Server. You can use online services that store your information or you can use local storage.
Take a look at:
That question is also debated here and here