This book is structured by two-level presentation including a simple descriptive treatment and slightly more in-depth discussions of specific topics. The first-level treatment covers the notions, terminology and techniques that are required to use a synchrotron facility. The book is therefore an ideal first step for all those beginning to use synchrotron light for their work or are considering it. The treated topics include the basic functioning mechanisms of synchrotrons and free electron lasers a description of sychrotron-based techniques in x-ray imaging and radiology, spectroscopy, microscopy and spectromicroscopy, EXAFS, crystallography and scattering, and microfabrication.