Saturn is often viewed with uncertainty and unease, but in this text, Bil Tierney sees Saturn as a key for liberation, as a guardian angel planet, as indispensable to psychological maturity and material stability. Tierney explores Saturn from the perspective of the natal sign and house. He also views it through each element and modality, and through astronomy, mythology and metaphysics.
If you want to understand Saturn as an astrological variable, read this book. The author does a thorough job of explaining the various placements of Saturn, which can be invaluable for understanding Saturn in your chart as well as other people. It can also help you understand how to work with Saturn for planetary magic purposes.