Live Connect SDK for Windows Phone 8–authenticating and basic info

Live SDK makes it easy for you as a developer to use Live services from inside your Windows Phone 8 app. More than 500 million people use services like SkyDrive, Hotmail, Messenger etc. There are some things which you don’t want to store locally when building apps, such as data that needs to be used from any device that a person has, calendars and events, people etc. When you use Live SDK, it synchronizes beautifully…

Microsoft Certified Solutions Developer: Windows Store Apps in C#