Well, I had my first DB lesson yesterday and the first thing I found out was that pretty much everything I'd ever done on it was completely WRONG!!! Learning to play DB is much more difficult (if not impossible) to do from just watching someone or reading a book on it. There are too many bad habits that are too easy to adopt. If I had bought a DB first and tried to learn on my own, I likely would have destroyed both of my hands and forearms in the process, and still not learned half of what I did in an hour yesterday. So, as has been said here a hundred times: On DB, you NEED a teacher. There are far too many subtle details to learn, which could take years to pick up on your own. Starting a new instrument sure is humbling, but it's also pretty exciting!