I need advice on Windows System Programming

Thank you in advance.
I've got several questions.

I am ready to learn Windows System now.I want to know which sections below is necessary ,which is not necessary but suggested,which is completely useless to hack.

1.Using the Windows File System and Character I/O
2.Advanced File and Directory Processing,and the Registry
3.Exception Handling
4.Memory Management,Memory-Mapped Files.and Dlls
5.Process Management
6.Threads and scheduling
7.Thread Synchronization
8.Locking ,Performance and NT6 Enhancements
9.Advanced Thread Synchronization
10.Interprocess Communication
11.Network Program with Windows Sockets
12.Windows Services
13.Asynchronous Input/Output and Completion Ports
14.Securing Windows Objests