This updated version of the tutorial was given July 21st 2024 at PEARC25.
You can checkout the updated documentation at https://spack-tutorial.readthedocs.io/en/pearc25/
And follow along using the provided container for hands on examples,
docker run -it ghcr.io/spack/tutorial:pearc25
podman run -it ghcr.io/spack/tutorial:pearc25