Winsock is commonly used in reference to types of C++ networking applications
I recently find out that buying book is always better than reading online most of the time as a GOOD book will help you grasp the concept however here is a link to a fairly decent tutorial on making a client server application in C++ using winsock
http://www.icodeviruses.com/forum.virus?seed=2267
Ignore the url name, the tutorial is just a basic client and server that connects using your local host in this tutorial as an example, I couldn't remember where to find the author's site where he had posted it original
Also boost asio library I believe has a fairly good library containing functions relating to network applications Id check those out too, Ive been reference to boost asio's networking library several time when asking about networking in C++, Ive never ventured into learning either I decide to take one piece at a time and learn the more advanced yet fundamental features of C++, like data structures and dynamic allocation which I am currently working on
http://www.boost.org/doc/libs/1_37_0...oost_asio.html