I don't see this posted else where, and I haven't read any good explanations, so I thought it was time to seek advice. I've got a good friend who has also been asking me about these things and I don't have a good answer. I've fished on again off again for almost 2 decades now, but still consider myself a rookie when it comes to fishing. Anyway here are the questions I have. #1) What is the difference between Rod Line Weight? I see mostly anywhere from 2 to 12 but have no idea really what the Line Weight means. #2) What is the difference in lengths mean? I have seen 7" to 12" rods and again I have no clue what the length is for. #3) What is the difference between the various Actions? Most of what I see is Mid Action or Fast Action. #4) Line Weight and Backing Weight what is the difference? I know I might seem like I don't know much of anything, and that is true, I won't hide that. All the fishing I have done has been Spin fishing, but trying to help a friend out who wants to learn Fly Fishing has actually got me interested in attempting to learn as well. I apologize for my lack of knowledge.