Here are some links you might find useful. Most of them are probably for more advanced C programmers, but some might be useful for 'newbies' too...
The Sysinternals web site provides you with advanced utilities, technical information, and source code related to Windows NT/2000/XP/2K3 and Windows 9x, Windows Me internals that you won't find anywhere else:
http://www.sysinternals.com/Winspector - Ultimate Programmers Window Spy Utility:
http://www.windows-spy.com/The Online Home Of Matt Pietrek (famous 'guru'):
http://www.wheaty.net/NeHe Productions (OpenGL Tutorials and many downloads):
http://nehe.gamedev.net/Catch22 Productions (source code, tutorials):
http://www.catch22.net/SQLite is a small C library that implements a self-contained, embeddable, zero-configuration SQL database engine:
http://www.sqlite.org/ImageMagick is a robust collection of tools and libraries to read, write, and manipulate an image in many image formats (over 90 major formats):
http://www.imagemagick.org/Pelle
