Help with a software

Hi All,

I am a beginner programmer and would like to develop an own application. I have experience in BASIC and C, learning C++. The reason why I posted to C# is because I found several sample programs which are developed with an SDK called Ozeki VoIP SIP SDK in C#. Since I have no experience in C# I would like to ask your help. Could you please tell me how can I start to create those sample programs? Would it be better trying after I gained experience in C#? If you have any ideas please share them with me. Thank you.