Observational and theoretical issues of interacting binaries was the topic of the 22nd of the renowned Advanced Course of the Swiss Society for Astrophysics and Astronomy. The three contributions by outstanding experts collected in this book deal with observations, symbiotic stars, cataclysmic variables, massive binaries and X-ray binaries thus filling a gap in the existing literature. The articles review the state of the art and address both students and researchers. The accessible and didactic approach makes the book a valuable source for future work on interacting binary stars whose study is essential for a better understandingof stellar evolution.