Explore the intricacies of low-energy lepton experiments in this comprehensive lecture, the first in a series. Delve into the fundamental principles and methodologies used in studying leptons at low energies, gaining insights into cutting-edge research in particle physics. Learn about experimental setups, detection techniques, and data analysis methods employed in these investigations. Discover the significance of low-energy lepton experiments in advancing our understanding of particle interactions and their implications for broader physics theories. Engage with complex concepts presented by expert physicist Luca Galli, and develop a solid foundation for further exploration in this fascinating field of study.