Well, this is my first post, so I'm gonna make it a simple (yet not so short) one.
If you have started messing around with OpenTK recently and also do not have much experience with .NET, this might help you. This is especially true if you want to use WPF (Windows Presentation Foundation) instead of Windows Forms for rendering OpenGL graphics through OpenTK. And if, on top of that, you also intend on using Microsoft Kinect SDK, then this is the right post.