I don't know if I like that site too much - the colours are hard to read, and the code isn't formatted on at least in the C++ tutorial, there are c tutorials in the python list. Anyway, if you're finding it good that's cool. (The OpenGL ones are based on immediate mode, which is technically not valid in the latest versions of OpenGL (though likely to be supported for some time)).
I contact the owner of the site with your problems and he gave me back this e-mail:
"Thanks for your feedback.
I'm sorry for the Win32 lesson in the Python section, I don't quite know how it ended up there - the lesson has been temporarily removed until I get time to write a Python functions lesson.
Also I completely agree that the horrible green code looks disguising, and I don't know why I didn't look into Syntax Highlighting earlier - I've now started incorporating Syntax Highlighting around the site (At the time of writing this I've just completed doing to Lua section)"