A preliminary list of training courses which are (partly) open to participants across institutional borders:
University of Bern, Science IT Support: https://www.scits.unibe.ch/training/training_and_workshops/
Swiss Institute of Bioinformatics:
https://www.sib.swiss/training/upcoming-training-courses
ETH Zürich, Scientific IT Services:
https://sis.id.ethz.ch/services/consultingtraining/
University of Zürich:
https://app.connect.uzh.ch/apps/id/kurse.nsf/
EPFL, Scientific IT & Application Support:
https://www.epfl.ch/research/facilities/scitas/documentation/training/
University of Basel, sciCORE:
https://scicore.unibas.ch/events/teaching-training/