To help layout a clear path to understanding Buddhism, in this first part of a short series of episodes, we try to clarify some important terminology and introduce the main types of Buddhist practice and what makes them different from each other. We discuss the four main schools of Vajrayana Buddhism, their philosophical views and how they came to be and, finally, the importance of taking refuge and what that means. It's my hope that we'll come away with a better grasp of all the various influences that have helped make tantric Buddhism what it is today.