I think it will be very useful for newcomers: scratch-demos.
How it works: you can choose "Load demo" from extras menu. Scratch demos have their own format... Like "*.sbd". When demo is loaded, it starts demonstrating thing you need: it starts move mouse, drag blocks, use "Say" from mouse-pointer to comment it's actions. The information demo needs is stored in demo file.
For example: demo called "How to create sprite movement". Drags "Move 10 steps", presses green flag and sayes: "This is all you need to do". What do you think?
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