Learn how to turn on and turn off notifications on Start, on the lock screen, and in the upper-right corner.
Get answers to questions about the Messaging app like how to start chatting and how to sign out.
Learn how to do all the things you did with the Messaging app like chatting with Messenger and Facebook friends on Skype.
Learn about Windows Firewall: what it is, how to turn it on or off, and how to allow programs to communicate through it.
Learn how to view which features an app has permission to use before you install it from the Windows Store.