INTRODUCTION - Although it is said that a little learning is a dangerous thing, it cannot be doubted that a little knowledge is extremely useful at least to a citizen of the moderil world. That world has become so complex, the relations between State and citizen so involved, however, that a little knowledge is seldom enough. The ordinary man and woman in their everyday lives are constantly faced by the necessity of securing and filling in forms-to mention but one of the innumerable occasions where knowing how is of real importance. But in our busy livcs few of us have time, none of us have inclination for studying and storing in our memories the vast amount of information that would be necessary to enable us easily and immediately to solve the practical problems that confront us. How many, for example, of those people-and they are legion-who try to make up their minds whether to live in town or in the country know the real advantages and disadvantages of each Wow many indeed, would know where to ask for or how to discover the information, such as comparative prices, that would enable them to make a decision Very few. We are told that the wise man is he who knows where to look for wisdom. And that is largely so. Yet again this world presents such a multiplicity of storehouses of wisdom that the normal person is utterly bewildered and prefers frequently to struggle on in ignorance than face thc Herculean task of finding out just what he wants to know. Natural as is such an attitude, it is unfortunate if only because the citizen is thereby robbed of innumerable benefits and of much help.