The ABC of the Histology is intended to convey basic knowledge of human tissues by images analysis, using the standard technique of staining haematoxylin-eosin (H&E). The approach of the book is to simplify the concepts of a knowledge area somewhat difficult to convey, by analyzing 125 images, selected for the purpose of highlighting the fundamental concepts of Histology. In summary, the ABC of the tissues, which can be read and summarized in few hours.