Too much text
Sorry, but I got bored by the lack of practical applications for this piece - you don't show people how it's done, merely write them an essay on how to do it, which only teaches the most hardcore of nerds how to do what you did. I think that with the way that the piece is set out, it needs a revamp to get it working properly.
Start with the basics - proper buttons, as opposed to having to click on the letters, which move away when you mouse over them. As they all stand, you've got a good standing with the way that the setup of the menus etc, but getting some buttons sorted would be a great asset.
When it comes to the tutorial itself, go into depth, but remember that pictures can speak louder than words. You might have to have more frames for the piece overall, but you will get the points across with a much better rate of completion, where people actually use the tutorial and it works.
A mute button would also be nice, since the music did get a little on my nerves.
[Review Request Club]