Combinations for ProficiencyHere are some planetary

Combinations for Proficiency
Here are some planetary combinations for making one proficient in astrology.
According to Bhavartha Ratnakar (Chap. 2, Education):
If Mercury is in the 4th house, the person becomes proficient in Astrology.
If the Sun. Mercury and Rahu he in the 5th house, the native becomes learned in astrology.
The person becomes well versed in astrology if the Sun and Mercury in his horoscope are in 2nd house. He becomes a mathematician if this combination is aspected by Saturn.
According to Sarvartha Chintamani,
If Mercury is in a Kendra. the lord of 2nd house is strong and Venus is located in the 2nd or 3rd house with a benefic; or if Venus is in exaltation in the 2nd house, the native becomes the foremost among the astrologers.
The 6th, 8th and 12th houses are called ‘hidden’ houses. The 8th and 12th houses deal with extra-sensory perceptions and play an important role in the horoscopes of astrologers and mystics. The lord of the 5th in 10th would be in the 6th from the 5th; and the location of the 10th lord in the 5th would mean he is in the 8th from the 10th. The lord of 10th in the 9th is again in the 12th from the 10th. Such planetary positions in Navamsa as well indicate that the native will be drawn to the study of astrology.
Further,
If the lord of 2nd is the Sun or Mars and is aspected by Jupiter and Venus and Mercury is in Parvatamsa (strong in the same sign in 6 Vargas, the native knows the rationale of astrology.
Brihat Parasara Hora Sastra (Chap 9, Sloka 91) also states: If Ketu occupies the Ascendant, the 5th. 9th or the Karakamsa. the native becomes an expert in mathematics and astrology.
Among the planets, Jupiter represents Gnana (Divine knowledge), prosperity, status and fame in life. Mercury represents knowledge, grasping power and prompt decision-making. Strong Mercury gives mathematical ability which forms the basis of astrological calculations. The role of Mercury in making the native a proficient astrologer is quite important. Mars shows energy, sharpness and logic. The Sun is the source of all knowledge and confers name, fame and status to the native. Saturn gives perseverance, patience, and a research-oriented mind. A strong and unaffilicted Saturn means more happiness and less misery in life. The strength and association of these planets with the Ascendant and the Ascendant lord gives proficiency in astrology.