Equations and Mathematica code, technical jargon has been tactfully replaced where necessary and illustrative materials added, thus enabling much easier reading and comprehension. The work is self- contained, it requires no previous knowledge of quantum physics or theortical computer science. Up-to-dateness a key feature, including a chapter on biological (neural) computers. Extensive use of visual imagery throughout the presentation, so as to better illustrate the abstract ideas of quantum computing to readers. Contains very useful, comprehensive annotated bibliography, especially designed for the general science reader.