Our Zero-to-Hero instructors lead the thematic introductory modules of the Summer School, providing participants with a solid foundation in key areas of machine learning. Aishwarya Venkataramanan from Friedrich Schiller University Jena introduces the topic of Uncertainty, while Shijie Jiang from the Max Planck Institute for Biogeochemistry covers essential concepts in Explainable AI (XAI). Nuno Carvalhais, also from the Max Planck Institute, offers a practical introduction to Hybrid Approaches. From the National Technical University of Athens, Ioannis Papoutsis guides participants through the fundamentals of Large-Scale Machine Learning. Together, they ensure that all attendees are well prepared for the in-depth sessions that follow throughout the week.