guys if someone uninstall a metro app like maps how can be installed again? also can we modify news sources?
You can download everything again threw the "Store" app. A little perseverance would have told you that
go to store, right click at the bottom end and you see : Your Apps. Click it and you find all your installed/ not installed apps available. If one should be gone, you can reinstall it very easily or update it. To modify news, you need to change your location but this is not recommended as it might turn into time zone trouble and other confusion.