If you want to get a start with some of the Windows Live SDKs, then it can be a daunting task. You could try looking for tutorials on the chosen SDK, or look at the examples that usually come with the SDK package. But with two of them you are actually provided with an interactive SDK that you can use and create your own code based on what you put choose. At the moment there are only two interactive SDKs, and they are provided for Live Search and Virtual Earth. Each one has its own advantages for usage, Live Search is a great starting point for your C# project, whether it be an ASP.NET project or a WinForms project; the Virtual Earth one is good for even the most basic of users, as it has the ability to let you put the code simply into a webpage and can easily give you, for example, a "Where are we" sort of page for your website.