How to Use Popular Chords: Easy-to-Use, Easy-to-Carry, One Chord on Every Page by Jake Jackson
A handy guide for both guitar and piano players, this book places the most popular chords in context. The simple and clean layout provides clear diagrams and practical advice on chord progressions, with concise information on what chords are, how they can be used, and what they can be used alongside. In its compact spiral-bound format this is an essential companion for both beginners and more experienced players looking for extra ideas.