Understanding StellarEvolution is based on a series of graduate-level courses taught at theUniversity of Washington since 2004, and is written for physics and astronomy students and for anyone with a physicsbackground who is interested in stars. It describes the structure and evolution of stars, with emphasis on thebasic physical principles and the interplay between the different processesinside stars, such as nuclear reactions, energy transport, chemical mixing,pulsation, mass loss and rotation. Based on these principles, the evolution oflow- and high-mass stars is explained from their formation to their death. In addition to homework exercises for eachchapter, the text contains a large number of questions that are meant to stimulatethe understanding of the physical principles. An extensive set of accompanyinglecture slides is available for teachers in both Keynote® and PowerPoint® formats.