Based on a graduate course taught at Utrecht University, this book provides a short introduction to the theory of Foliations and Lie Groupoids to students who have already taken a first course in differential geometry. Ieke Moerdijk and Janez Mrcun include detailed references to enable students to find the requisite background material in the research literature. The text features many exercises and worked examples.
An accessible book on an abstract topic. A bunch of examples, some nice picture-ideas (the ubiquity of the Reeb foliation), and hints towards a big picture (C* algebras, cyclic homology, etc.).