C

Socket programming

http://www.thegeekstuff.com/2011/12/c-socket-programming/

Windows programming

Difference between Win32 project and CLR project

See here.

A Win32 project is used if you want to end up with a DLL or a Win32 application usually using the bare WinAPI. A CLR project is used to create C++/CLI project, i.e. to use C++/CLI to target the .NET platform.