...highly recommended for anybody interested in Economics, with or without much formal background in this science.
Start, for instance, with an excellent short exposition of "the Economics of Communism", by Bryan Caplan (recall him as the author of this book you should in no way miss).
PS. "Concise" is really the key word in the title. In other words these authors truly practice what they typically preach as economists, showing perfect understanding of the opportunity cost of time :-).