Vedic Astrology & Spirituality
The Agni Purāṇa recommends thirty-six gemstones for activation of rājayoga for the kings. I guess ordinary mortals can also make good use of these recommendations.
DBC offers online courses in jyotish (Vedic Astrology) taught directly by Sanjay Rath as per the tradition, through narrated power points and other audio tools. The courses are at different levels, from the beginners through the intermediate to the advanced and are known as SoHamsa | DBC courses, with individual classrooms and assistant teachers
Five Year Jyotiṣa Grandmaster
Sagittarius Publications is the publisher and distributor the popular quaterly magazine the Jyotish Digest, as well as many thorough books on the subject of Vedic Astrology or Jyotish.