Do you have a
@using Telerik.Web.Mvc.UI
directive at the top of your view? Then, do you have the following in your web.config
in your Views folder,
not the web.config in the root folder
1:
<system.web.webPages.razor>
<host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<pages pageBaseType="System.Web.Mvc.WebViewPage">
<namespaces>
...
<add namespace="Telerik.Web.Mvc" />
<add namespace="Telerik.Web.Mvc.UI" />
</namespaces>
</pages>
</system.web.webPages.razor>
Then, the simplest 'tutorial' or quickstart is to look at the controller code and the Razor view code in the Telerik exmaples. You can find these locally if you chose to install them, or they are available online.
1 I doubt it hurts to have these in all the web.configs you want to, but it must be in the Views folder config.