It's good to enroll in the Betty Crocker Cookbook School of Astrology, when just beginning to learn astrology. But avoid the "Betty Crocker pitfall" by remembering that you eventually need to start weaning yourself away from all those excellent cookbooks.
The planets are symbols of archetypal energies. Start playing with and experiencing the energies for yourself…. get a feel for the energies…. don't simply learn all this stuff by rote memorization.