These studies are proposed in the arts and esoteric sciences such as astrology, divination, horoscope, taro-logy numerology, the astromancy … and take the form of simple text or e-book issued paperless electronic channels such as e-mailing (email) or digital download (electronic download). The site www.astromary.com offers no provision of advice or service, but only a study produced with the assistance of a computer program.