A natural resource windfall is an opportunity to transform a poor economy. Unfortunately, it is also an opportunity for plunder. The struggle between these options is existential: for example, the same resource discovery, diamonds, propelled Botswana from poverty to affluence, and convulsed Sierra Leone into violence and destitution. In that struggle, the best defence is a critical mass of citizens who understand the issues. But that critical mass has to be built: the siren call of plunder has often been powerfully seductive, and some of the choices that turn out to be key are not obvious. This guide is a timely and well-crafted step in building that citizen understanding. Opinion-leaders in Guyana, both in politics and the media, now have a responsibility to give it the attention it warrants.