You can control the playback speed of a tutorial video that is posted for Fab Lab. VLC Media Player is used to play videos on your SN@P laptops. While playing a video in VLC, if you would like to slow it down to catch a detail--hit the [ key (left bracket). If you would like to speed up through a part that you are familiar with--hit the ] key (right bracket). When you would like to return to normal speed, hit the = key (equal sign).
The attached document has more options, with a link to a YouTube help video.
If you are playing a YouTube tutorial video, you can change the playback speed from settings (the gear icon).