Project Pythia is the education working group for Pangeo, a community for open, reproducible, scalable geoscience.
Project Pythia is a wonderful open-source, community-owned, geoscience-focused learning resource.
For a good skills refesher, we encourage you to work through their Pythia Foundations notebooks which include:
For examples of reproducable, open-source, geoscience-focused workflows, we encourage you to work through their Cookbooks Gallery, such as: