Here are some OpenGL samples with advance features. NeHe OpenGL tutorial focus on the OpenGL fixed pipeline, but those samples are foucs on the programmable renderering pipeline, OpenGL shader language. With such shader language, we could easily controll how object apperance will be, and get some fatsitc image that could not by achieve by the fixed pipeline. Those samples is a good start point to explore OpenGL advanced features or take them as manual as you wish:
The full source code with VS2008 built version could be download from here.