Hi, Author here. Thanks for the feedback. I'm happy to correct any mistakes.

Sorry you don't think this is useful. However, as the post clearly points out it's not intended to make you a GPGPU programmer. That really isn't possible in a single blog post. Rather, it tries to give a general overview of how the GP part of GPUs works for the general reader, and to try to relate terminology used by AMD and Nvidia. I'm not aware of another source that tries to do this succinctly.

The end of the post gives lots of links for further reading for readers who want more.

And FWIW I have done quite a bit of GPGPU programming.