The book "Towards magnetic resonance in scanning tunneling microscopy using heterodyne detection" offers a comprehensive introduction to a novel concept for conducting magnetic resonance measurements in the GHz range within a scanning tunneling microscope. The author, Moritz Peter, explains the fundamentals of heterodyne detection in a spin-polarized tunneling barrier and describes the experimental requirements necessary for implementing this technique. Special attention is given to an innovative method for suppressing transmission effects, which is crucial for the accuracy of the measurements. The work also presents measurements on three model systems that were conducted to validate the new technique and compares these with simulations. This detailed analysis provides valuable insights for professionals and researchers in the fields of materials science and nanotechnology.