This is one of the reasons why I prefer written tutorial over video tutorials, usually they start from scratch, and if they don't they usually point out a tutor

This is one of the reasons why I prefer written tutorial over video tutorials, usually they start from scratch, and if they don't they usually point out a tutorial where you can start at. That, and I my mind usually loses focus at some point in the video and I lose track easily switching between the video and whatever I'm trying to do.