Hey guys, Im trying to get the hang of all this stuff so forgive me if my questions are becoming annoying. I am clueless when people start talking about arrow spine. What does this mean? How do people decide what size arrow and broadhead they will use? I recently purchased a Traditional Archer magazine, and I noticed in many of the pictures, the guys with back quivers had all different kinds of arrows back there. I am used to the compound where every arrow is the same. Any help? Thanks guys!