This concise introduction to modern EPR spectroscopy and its applications presents the theory of EPR and covers key techniques, sequences, and simulations in detail. It concludes with a review of applications in physics, chemistry, and the life sciences. Filling the need for a solid theoretical understanding of this demanding technique, the book draws on international authors using an accessible style to provide a solid resource for those currently working in or newly entering the field. Topics discussed include multifrequency, pulsed hyperfine techniques, CWENDOR, coupled spins, and instrumentation.