Learn CoreFoundation

I'd like to know how some developers achieve amazing functionality with core technologies. My education in programming was based only in high level programming languages like c# and java and I find very hard to "go way back" and learn c based technologies like core graphics, also the thing is that I can find books that teach you core graphics but can't find any on core foundation, so, when I read about peer to peer and socket topics I feel lost because the CFNetwork header file is开发者_如何学JAVAn't enough for somebody without experience in unix sockets. So , back to the question, what kind of resources should I look for, to learn core foundation and then CFNetwork?

Apple's website is full of documentation on a lot of its technologies. For example, the first result on a Google search for "CFNetwork" is the CFNetwork Programming Guide.

It's really not all that different. Be careful not to psych yourself out. CoreFoundation was even intentionally modeled after the Objective-C Foundation framework.