Dates of lectures are correlated with class log dates [index by date and book chapter section, including PDF scans of lecture notes shown on smart screen]
Does not work with Internet Explorer, go figure [both windows remain small]. Use Firefox or Google
Chrome.
You can switch which window is big with the double arrow interchange icon.
Do not click on the video at the right, but on the Watch link on the left.
Raise the volume level to max on the webpage which by default is at half level
(each time you enter site, must redo).