"Philosophy" was a contrasting term re "Sophism," which latter was a kind of reductive manipulation for purposes of ego and monetary gratification.
So, one has to be at that "love of wise dominion (wisdom)" level, or clearly learning toward loving same.
If one is moving in a more or less "thoughtful" mode, that may or may not be particularly "philosophic," in the sense Plato and Plotinus intended (a major goal of which was God-realization, noted by Plotinus as "One Mind Soul"-(realization).
Depending on the teacher, philosophy class is historical recapitulation of some thinkers, perhaps some inculcation of pov; the better-received teachers tend to be brilliantly entertaining.
One of the values of reading original texts (often somewhat dense/abstruse) is learning to think along with the process developed by the particular thinker. Learning how to think like Plato, Plotinus, Kant, Husserl, and/or Whitehead is often very helpful and even "educational."
One of the more valuable sections of philosophy is awareness of simple fallacies http://en.wikipedia.org/wiki/List_of_fallacies and http://en.wikipedia.org/wiki/Informal_fallacy
Books such as "Philosophy for Dummies," Tom Morris, provide an excellent resource and overview of Western philosophical thought.
Other interesting and entertaining books would include "Plato and a Platypus Walk into a Bar," Cathcart and Klein, "Nihilism," Eugene Rose, and "A Philosophy of Universality," Omraam Aivanhov.
"Sophie's World," by Jostein Gaarder, is fairly good on ancient philosophy, but tends toward a kind of reductionism in its second part (on modern, aka 1500 on, Western philosophy). Rose's "Nihilism" is a good counterpoint to it.