Hello, I wish to develop an application. The thing is that I am only familiar with C and C++. Therefore after looking for solutions on the Internet I found a site that had several sample programs. The sample programs are developed with a software called Ozeki VoIP SIP SDK. My only concern is that they are in C# which I do not know. Could you please tell me how to try to use this software? Any suggestions how should I try to learn C#, any good books? Hope you can help me. Thanks in advance.