
The guide was written to meet the need for practical, step-by-step advice for aid workers who wish to use free and open-source resources to produce maps both at field and headquarters levels. The first edition contains an introduction to the topic of GIS, followed by chapters focused on the use of two recommended free software tools: Google Earth, and MapWindow. However much of the guidance is also relevant for users of other software. In addition there is a chapter on using GPS to collect data during humanitarian emergencies.