Aristotle on Artifacts: A Metaphysical Puzzle Book

This book was hugely helpful to me in understanding "Republic" and it provides excellent recommendations for further reading. Pappas goes through Plato's text and numbers the parts of Plato's arguments, then uses the numbers in later chapters to link the development of ideas through the book. I find this approach very helpful for explaining the tangents that appear throughout the dialogue and then relating the tangents to the main arguments presented by Thrasymachus and Plato's brothers.