As a beginner,  you may think that the only thing you need to sew a garment is a pattern, fabric and thread, with maybe the occasional button or zipper.  The reality of the situation is that sometimes there's a lot more that goes into sewing a project and it may be something that's not obviously visible.  Interfacing is one of our sewing heroes.  When used correctly, interfacing will never be seen on the right side of the garment so many people don't even know it's there.  This element, though, is incredibly important as it gives shape and stability to parts of our garment, such as collars, cuffs, waistbands and facing pieces.  Because of its many different uses, you'll find many different types of interfacing, which can add to the confusion.  This tutorial helps cut through this confusion, providing an understanding of interfacing.  When it's time for you to use it in one of your projects, you'll be able to pick the interfacing that will work best with your fabric and project.