A great Win32 API tutorial. Quote from the site: "This tutorial attempts to get you started developing with the Win32 API as quickly and clearly as possible."
http://winprog.org/tutorial/files/forgers-win32-tutorial.zip
2,Reliable Software Win32 API tutorial (in c++)
This tutorial covers the major features of the WIn32 API, as well as OLE, COM and DirectDraw
