Wherever your air sign planets and asteroid (Venus, Juno, Mercury, Saturn, and Uranus) are placed, shows mental clarity. Same goes for the signs Libra, Gemini, Virgo, and Aquarius.
For example, I have Mercury Virgo in the 8th so I tend to have clarity about psychological health, sex, control, accounting, trade and commerce, body works, and occult subjects. Initially this clarity is used to help other people but eventually I learn my own mind, etc. and these subjects (including the occult) to help myself.
What have you found interesting about your chart in regards to where your air signs / planets / asteroids are?