3DBuzz “one of the original online learning resources for computer graphics, programming and game development” shut down this year.
I went to an old bookmark to visit 3DBuzz.com only to find out that they shut down. 
Here is an article about that: https://gamefromscratch.com/3dbuzz-shut-down-and-release-content-for-free/
And finally, for anyone looking for their courses, here is the Internet Archive collection of courses.
https://archive.org/details/3DBuzz