Thank you for writing.
When the WinForms suite is installed the examples are installed as well. You can view them by opening our demo application (see attached image). In addition you can either view the code directly in the demo application or open the Visual Studio solution (you can find it in the install folder usually: C:\Program Files (x86)\Telerik\UI for WinForms Q1 2015\Examples\QuickStartExamplesCSVS2010.sln).
If you have downloaded the standalone examples (second image) you should manually change the references in the solution file (the same solution file is available as well).
I hope this information helps. Should you have any other questions, I will be glad to assist you.