The book primarily describes the so-called transmission formalism which is applied to electron transport in mesoscopic systems. Yet the main strength of the book is its introduction of the powerful, yet easy to implement numerically, apparatus of single-particle Green's functions. A device engineer armed with the knowledge of this apparatus and a copy of MatLab should be able to accurately model conductance and charge distribution in devices on the scale of tens of nanometers. Indeed, the book illustrates the application of the apparatus to transmission calculations in devices such as resonant tunneling diodes and single-electron transistors. The book provides much more than calculation recipes; the roots and physical relevance of the transmission formalism are well explained by examples such as the quantum Hall effect and conductance fluctuations. The text should be a great aid to future nanoelectronic device engineers.