Video lectures can sometimes drag, maybe even statistics videos? Did you know that YouTube lets you adjust the playback speed? Simply go to ‘Settings’, the little cogwheel lower right, choose ‘speed’, and select from the options. Often, speeding up to 1.25 or 1.5 can be good. Of course, you can pause, rewind, or tweak the speed up or down at any moment. Better still, pause, write down the main messages in your own words, then watch some more.
You might even like to fiddle with the speed of the ITNS videos, which are all on YouTube, as described in this post.
Happy (fast?) watching.