You may need to click to start the vid and there is sound, so if you don’t hear anything, click the sound icon. You can pause it by clicking on the vid.
This one is about the file explorer. If you click the white double triangle in the upper left, it will go to full screen. Easier to see. Afterwards scroll way down to get to the 2nd one.
This one is how to save – and you get to see me screw up – and figure out what I did wrong. You probably will have to pause to be able to read the annotations.