Woah this is a... shitload of tutorials!! Awesome. I know a few of these, but I can't say I'm that proficient enough that I remember even the features included here that I have occasionally used.. so it's great reference. The tutorials are all quick and to the point, so that's good, and the music is a funky addition. The one thing that could be a bit better is the overall layout. Sure dark colors are cool, but it's not the most easy to read with red text on a black background. A more educational-ish layout would be cool, or just something usable. Also, how about adding bigger hit areas on the choices, making them cover the text as well as the number? Since there are so many it'd be a lot easier to skim through them like that. The effort though must've been awesome. Nice work!