Decoding the Stars is a companion volume to Astrophysics - Decoding the Cosmos from astrophysics teacher and researcher, Professor Judith Irwin. In this new book she presents an accessible, student-friendly guide to the key theories and principles of the scientific framework of stars presenting a close connection between observation and theory. Stellar astrophysics is a discipline with active, dynamic and engaging research being carried out today and this text provides students with an easy-to-read foundation course in the subject. There will be many examples in this text which illustrate the important physics in a process and provide much useful information, without resorting to numerical calculations.