Can one learn medical astrology on the internet?
If not, are there any known reputable sources of instructional material in this field e.g. books, academies etc.
I am a student of natural medicine and wish to integrate/fortify this modality with astrology.
Also, do readers here consider the theory of medical astrology plausible?
One other question: I am interested in the concept of there being thirteen signs to the zodiac, and would prefer to explore this system. Does anyone know of books, internet sources etc teaching this system?

Thanx so much and (belated) merry Christmas to you all!!