The Nuclear Information Handbook has been published as a result of the Fukushima Daiichi nuclear crisis in Japan. It begins with a synopsis of the accident and continues with a description of relevant dosage reporting units, definitions, concepts, radiation protection guidelines, and other information that make it easy for the layperson to understand and evaluate this or any other nuclear accident. This handbook also includes a country-by-country database of Chernobyl fallout, which helps to provide a context for understanding the Fukushima disaster. It also includes a review of the fuel cladding failure accidents, which closed the Maine Yankee Atomic Power Company at Wiscasset, Maine - information relevant to the operation and decommissioning of many of the world's aging nuclear reactors. The text contains links to important online sources of radiological surveillance data about the ongoing accident in Japan as well as to other important nuclear safety information sources. Extracted from the online archives of RADNET's Nuclear Information on the Internet, this handbook is sponsored by the Environmental History Department of the Davistown Museum in Liberty, Maine and is published by the Pennywheel Press.