There is usually a shortcut placed on the desktop during the installation process that will give you access to the Demo application. There is also and Examples folder created, as well. The default location of the Examples folder for RadControls for WinForms Q3 2012 is:
C:\Program Files\Telerik\RadControls for WinForms Q3 2012\Examples
By default, when you use the MSI installer the demos are installed together with the controls and an icon is placed on the Desktop. Also, they are available in the Telerik folder in your Start Menu.
However, if you have used the web installer, the LocalDemos option is disabled by default (see screenshot for reference), so demos are not installed. Please make sure you have this option enabled when installing. If you continue experiencing difficulties, please let us know.
Regards,
Stefan
the Telerik team
Q3'12 SP1 of RadControls for WinForms is out now. See what's new.