Philosophy is about as broad a subject as one can find in a university curriculum. It also falls within philosophy to examine the methods and practices of virtually all academic disciplines. Because of this breadth, a person can study philosophy in ways involving the styles and techniques of thought of most other fields of inquiry. For example, the work of a philosopher concentrating in logic is much like that of the student of mathematics. A philosopher primarily interested in the philosophy of religion will often be doing much the same things as a theologian or a student of the history of religion.
Political philosophy is regarded by some as including political activity itself.
Many other such examples exist. In addition, philosophy examines the practices of other activities, such as the fine arts, that are sometimes thought of as different from typical academic disciplines. However, for the most part the activities characteristic of philosophy are peculiar to the discipline. The only way to know what it's really like is to give it a try. Philosophy 180 is an introduction to critical thinking and logic.