This second edition of Scanning Tunneling Microscopy I, updated with a guide to recent literature, is a unique introduction into a novel and fascinating technique that produces beautiful images of nature on an atomic scale, offering a comprehensive treatment of scanning tunneling microscopy, its diverse applications and its theoretical treatment. The present volume describes in detail the technique itself, its applications to metals, semiconductors, layered materials, adsorbed molecules and superconductors. In addition to the many representative results reviewed, extensive references to original works will help to make accessible the vast body of knowledge already accumulated in this field.