If I were to purchase a course, I would procure the one which fits most into those "qualities" I lack in my natal horoscope. There are many sites online offering free natal charts,
www.adze.com would be my personal recommendation. You will need your exact time and city of birth for this.
If you lack planets in the "Cardinal" quality, then you'd want "Decisive Action." If you lack planets in the "Mutable" quality, then you'd want "Ideal Mindset." If you lack planets in the "Fixed" quality, then you'd want "Persistant Achievement."
Not that I place much stock in Astrology... it's just an interesting way to decide randomly which courses to purchase.
