Christian Astrology for the 21st Century Study Guide: Based on Christian Astrology (1647) - For use with the modern English and original editions

Master traditional horary astrology with a practical companion designed to study alongside William Lilly's work. Christian Astrology for the 21st Century Study Guide organises and simplifies the core principles of Lilly's system into a structured format that supports both learning and reference use.

Built around thirteen study sections, this guide covers the essential material needed for understanding and applying traditional horary astrology: the planets, signs, houses, dignities and debilities, aspects, considerations before judgement, the forty-three aphorisms, timing methods, planetary hours, and a house-by-house guide drawn from Book II.

Designed for students at different stages of study, it includes reference tables, self-test questions, answer keys, and chapter concordances to help connect concepts back to the source material. Whether you are studying the modern Christian Astrology for the 21st Century edition or working directly with William Lilly's original 1647 Christian Astrology, this guide is intended to sit beside the text and support step-by-step learning.

Rather than replacing Lilly's work, it acts as a study companion that helps organise and reinforce the material while keeping the original teachings intact. Use it while reading, during chart work, or as a quick-reference tool when judging horary charts.

Inside this guide:

• Thirteen structured study sections covering the principal horary material
• Planet, sign, and house reference guides
• Essential dignities, debilities, and key horary concepts
• William Lilly's 43 aphorisms explained and organised
• House-by-house judgement guide from Book II
• Self-test exercises and answer keys
• Compatible with both Christian Astrology for the 21st Century and William Lilly's original Christian Astrology (1647)