Hi @roshan, although we try to make getting started with our various development kits as simple as possible, there is indeed an assumption of a basic level of knowledge for the various relevant programming languages used.
If you are only just beginning to learn coding, then you might find moving beyond the samples somewhat challenging.
There are many tutorials and help available online for .NET programming but without a greater idea of your intentions, it is difficult to provide more specific information for you. If you could kindly let us know what it is you would like to do with our SDK, I should be better placed to point you in the right direction.
For the time being, I would advise following the getting started tutorial as described in the Core SDK Documentation which demonstrates setting up an eye tracking enabled application from scratch which should at least help you get familiar with the basic concepts.