Some good online resources for C/C++ include: 
   
 
 
Information (from CSE) on using Microsoft Visual C++, including the debugger is:
   
	    MSVC++ debugger
 
The draft ANSI C++ standard.  Hard to use, but authoritative:
    ANSI C++ standard 
            Current compilers may or may not implement all the requirements
            of this draft standard.