The repository includes all OpenFOAM tutorials created by Tobias Holzmann and are available on the website https://Holzmann-cfd.com
The 33 tutorials are based mainly on the OpenFOAM version from cfd.direct (https://OpenFoam.org) while a few others are based on the OpenCFD OpenFOAM version (https://OpenFoam.com).
Since cfd.direct removed the AMI and ACMI approach completely, some tutorials were converted to the OpenCFD version in order to keep them in the history line.