I don't know what this music theory is, but it's something that I will look up, if that's whats needed for FL. In terms of video tutorials, the only ones that I were able to find, are earlier versions of FL. So in respect to the FL 8, changes were obviously made between 8 and 9, so when I go to check out what the tutorial is stating, sometimes I cannot find the location of what is stated. I have also messed around to figure out what a few things do, and I am looking up guides to try and assist me, but like I just stated, their isn't much to go on when it comes to FL 9, only 8. So I can only do what I can find.