This book grew out of a series of lectures the first author, professor of geodesy at Aalto University’s Department of the Built Environment, held as a guest lecturer at Bahir Dar University’s Institute of Land Administration in Ethiopia. The intensive course, delivered over two weeks full time, was to give the students hands-on experience using digital aerial photogrammetry software in the service of mapping the country for economic development. We did so using two different digital-photogrammetry software packages: the commercial package ERDAS Imagine, which contains LPS, the Leica Photogrammetry Suite; and the open-source package e-foto, which was developed in an academic environment in Brazil. The hardware, fifteen digital photogrammetry workstations with ERDAS pre-installed, was an earlier donation by SIDA, the Swedish development co-operation agency. Ethiopia is hardly the only country in need of modern map-making technology, and personnel understanding its operation and utilisation, for its development. This is the motive for developing the lecturing material into a book, aimed at giving the reader everything (short of a laptop) to get started.