The manual provides practical instruction on workshop practice, beginning with care of tools and the bench and a three-step plan of squaring, laying out, and cutting stock. It describes measuring and marking instruments, saws, planes, chisels, bits, and auxiliary tools, and explains sharpening, adjustment, jointing, securing parts, and preparing working drawings. A second section treats wood itself: logging and milling processes, grain and defects, and the identification and characteristics of common broad-leaved and evergreen trees, concluding with large Californian specimens. The text stresses linking nature study to manual work and the responsible use and upkeep of tools.