Logic: the Basics is an accessible introduction to several core areas of logic. This thoroughly revised second edition not only comprehensively covers the standard topics in logic at an introductory level but also gives the reader an idea of how they can take their knowledge further. With its wealth of exercises (many of which have solutions in the encyclopedic online supplement) Logic: the Basics will be useful as a textbook in courses ranging from the introductory level to the early graduate level and also as a reference for students and researchers in philosophical logic.