I am totally new to Fly fishing. In fact, I have not yet received a setup that I ordered through a local shop, so I have nothing in front of me. I have been trying to read up on this forum as well as other sights so I have an Idea of the basics before I go for my lessons (when the stuff actually shows up). I read about backing, Fly Line, Leader, and tippet. I was real confused about Tipett and leader and the difference between the 2 until I read the recent post about tippett and leader and I understand and it makes sense. Now I need to find out the purpose of Backing. Can anyone help me make sense of this... as trivial as it may be?