One way philosophy differs from other subjects lies in the fact that there is relatively little agreement from one philosopher to the next concerning the answers that philosophers give to the questions that they raise Apart from the basic facts of the history of philosophy, there is no well-defined body of "accepted philosophical knowledge," as there may be in, say, history, or physics, or biology.
Indeed, philosophers are often important not so much for their answers as their questions. Thus in an introductory course you should not expect to find final answers to philosophical questions. Instead, through the course of the semester, you should grow to appreciate what constitutes philosophical problems, and why these problems, as philosophical problems differ from the sorts of questions raised by, say, science or history.
Hopefully you will come to learn what constitutes an acceptable sort of answer to a philosophical question and, what does not. In this way you can come to understand what philosophy is all about.
Just to give a sampling of the sort of questions with which philosophers have been concerned, we may list these traditional categories:
Logical Questions Ethical Questions Epistemological Questions Metaphysical Questions