Win32 development information
You can download this or order a CD. It includes documentation and sample code. Having this is a must.
Microsoft Developers network - MSDN
This is available online as well as on CD/DVD via a subscription. It includes all documentation for all Microsoft SDKs and development products. It includes portions of books and contains articles from various Microsoft periodicals.
General Window's programming
Processes, threads, systems programming
Socket Internet/network programming
The Microsoft newsgroup server has numerous useful newsgroups for asking questions.These newsgroups are self help newsgroups and not official support channels, although there are very sharp people who roam these newsgroups. The news server is msnews.microsoft.com, although these newsgroups will likely show up on your normal news server. The some commonly used newsgroups are
|microsoft.public.platformsdk.base||processes, threads, files, pipes, systems programming, etc.|
|microsoft.public.win32.programmer.kernel||processes, threads, files, pipes, systems programming, security, etc.|
|microsoft.public.platformsdk.ui||Windowing, messaging, etc.|
|microsoft.public.win32.programmer.ui||Windowing, messaging, etc.|
|microsoft.public.platformsdk.networking||network, sockets, named pipes, etc.|
|microsoft.public.win32.programmer.networks||network, sockets, named pipes, etc.|
|microsoft.public.platformsdk.com_ole||COM and Ole2|
|microsoft.public.platformsdk.security||security issues for Files, Pipes, accounts, etc.|