Declination in Astrology: The Steps of the Sun

Granted, I haven't studied other astrology books on declination, but I found this book to be an excellent introduction to the subject for me, an absolute beginner on the topic of declination. It has lots of interesting information and real-life examples that make reading it interesting and informative. Having read only this one book on the subject, I have started incorporating this information into my astrological chart readings, with good results.