I like this blog as well because sometimes he posts real "deep dive topics", not only the beginner stuff.
But he doesn't provide TwinCAT libraries, does he?
PS: Here you find a very good overview of tutorials, forums and open source projects:
He has some stuff on github https://github.com/sagatowski and some videos are with links to examples. Few weeks ago he also added .gitignore for TwinCAT to official GitHub Gitignore repository. This guy is very active 😀.